Use xa_nnlib for svdf for Fusion F1.
Use xa_nnlib for svdf for Fusion F1.

The code in this change is the subset of functionality needed for int8
svdf for Hifi4 copied from https://github.com/pnikam-cad/tensorflow/blob/a737c1e3945bc70022259479ad24133a343ec906/tensorflow/lite/micro/kernels/xtensa_hifi/svdf.cc

Note that the current change has not pulled in either the floating point
implementation or the Hifi5 implementation.

Profiled the keryword_benchmark with the following command:
```
make -f tensorflow/lite/micro/tools/make/Makefile TARGET=xtensa OPTIMIZED_KERNEL_DIR=xtensa TARGET_ARCH=fusion_f1 XTENSA_CORE=F1_190305_swupgrade run_keyword_benchmark -j8
```

gives a latency of 38516 ticks with this change vs 152642 ticks without this change.

Per OP latency with this change:
```
KeywordRunNIerations(1) took 38516 ticks (38 ms)
QUANTIZE took 3758 ticks (3 ms).
SVDF took 4753 ticks (4 ms).
FULLY_CONNECTED took 1353 ticks (1 ms).
SVDF took 4211 ticks (4 ms).
FULLY_CONNECTED took 1353 ticks (1 ms).
SVDF took 3145 ticks (3 ms).
FULLY_CONNECTED took 1353 ticks (1 ms).
SVDF took 4211 ticks (4 ms).
FULLY_CONNECTED took 1353 ticks (1 ms).
SVDF took 2890 ticks (2 ms).
SVDF took 3583 ticks (3 ms).
SVDF took 3054 ticks (3 ms).
FULLY_CONNECTED took 1091 ticks (1 ms).
SOFTMAX took 2042 ticks (2 ms).
QUANTIZE took 366 ticks (0 ms).
```

Without this change:
```
KeywordRunNIerations(1) took 152642 ticks (152 ms)
QUANTIZE took 3758 ticks (3 ms).
SVDF took 38003 ticks (38 ms).
FULLY_CONNECTED took 1353 ticks (1 ms).
SVDF took 18803 ticks (18 ms).
FULLY_CONNECTED took 1353 ticks (1 ms).
SVDF took 18803 ticks (18 ms).
FULLY_CONNECTED took 1353 ticks (1 ms).
SVDF took 18803 ticks (18 ms).
FULLY_CONNECTED took 1353 ticks (1 ms).
SVDF took 13907 ticks (13 ms).
SVDF took 15827 ticks (15 ms).
SVDF took 15827 ticks (15 ms).
FULLY_CONNECTED took 1091 ticks (1 ms).
SOFTMAX took 2042 ticks (2 ms).
QUANTIZE took 366 ticks (0 ms).
```

Also confirmed that the kernel_svdf_test passes with:
```
make -f tensorflow/lite/micro/tools/make/Makefile TARGET=xtensa OPTIMIZED_KERNEL_DIR=xtensa TARGET_ARCH=fusion_f1 XTENSA_CORE=F1_190305_swupgrade test_kernel_svdf_test -j8
```

tensorflow/tensorflow-pywrap_saved_model,Intel-Corporation/tensorflow,petewarden/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,tensorflow/tensorflow,gautam1858/tensorflow,annarev/tensorflow,yongtang/tensorflow,karllessard/tensorflow,Intel-tensorflow/tensorflow,karllessard/tensorflow,petewarden/tensorflow,petewarden/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,annarev/tensorflow,karllessard/tensorflow,gautam1858/tensorflow,tensorflow/tensorflow-pywrap_saved_model,frreiss/tensorflow-fred,tensorflow/tensorflow-experimental_link_static_libraries_once,karllessard/tensorflow,petewarden/tensorflow,gautam1858/tensorflow,petewarden/tensorflow,karllessard/tensorflow,yongtang/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,sarvex/tensorflow,frreiss/tensorflow-fred,sarvex/tensorflow,yongtang/tensorflow,annarev/tensorflow,tensorflow/tensorflow-pywrap_saved_model,tensorflow/tensorflow-pywrap_saved_model,yongtang/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,frreiss/tensorflow-fred,annarev/tensorflow,tensorflow/tensorflow,Intel-Corporation/tensorflow,tensorflow/tensorflow-pywrap_saved_model,yongtang/tensorflow,tensorflow/tensorflow-pywrap_saved_model,petewarden/tensorflow,petewarden/tensorflow,Intel-Corporation/tensorflow,tensorflow/tensorflow-pywrap_saved_model,gautam1858/tensorflow,annarev/tensorflow,gautam1858/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,Intel-tensorflow/tensorflow,annarev/tensorflow,frreiss/tensorflow-fred,frreiss/tensorflow-fred,tensorflow/tensorflow-pywrap_tf_optimizer,tensorflow/tensorflow-pywrap_tf_optimizer,tensorflow/tensorflow-pywrap_saved_model,sarvex/tensorflow,karllessard/tensorflow,karllessard/tensorflow,tensorflow/tensorflow-pywrap_saved_model,tensorflow/tensorflow-experimental_link_static_libraries_once,gautam1858/tensorflow,Intel-Corporation/tensorflow,yongtang/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,Intel-tensorflow/tensorflow,yongtang/tensorflow,tensorflow/tensorflow,frreiss/tensorflow-fred,petewarden/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,tensorflow/tensorflow-experimental_link_static_libraries_once,tensorflow/tensorflow,Intel-tensorflow/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,petewarden/tensorflow,frreiss/tensorflow-fred,Intel-tensorflow/tensorflow,frreiss/tensorflow-fred,gautam1858/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,yongtang/tensorflow,gautam1858/tensorflow,Intel-Corporation/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,tensorflow/tensorflow-pywrap_tf_optimizer,tensorflow/tensorflow,karllessard/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,sarvex/tensorflow,yongtang/tensorflow,annarev/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,paolodedios/tensorflow,sarvex/tensorflow,paolodedios/tensorflow,Intel-Corporation/tensorflow,Intel-tensorflow/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,tensorflow/tensorflow-pywrap_saved_model,Intel-tensorflow/tensorflow,annarev/tensorflow,gautam1858/tensorflow,Intel-tensorflow/tensorflow,karllessard/tensorflow,paolodedios/tensorflow,paolodedios/tensorflow,tensorflow/tensorflow-pywrap_saved_model,paolodedios/tensorflow,petewarden/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,Intel-Corporation/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,karllessard/tensorflow,tensorflow/tensorflow,Intel-tensorflow/tensorflow,gautam1858/tensorflow,annarev/tensorflow,karllessard/tensorflow,tensorflow/tensorflow,paolodedios/tensorflow,annarev/tensorflow,gautam1858/tensorflow,sarvex/tensorflow,frreiss/tensorflow-fred,paolodedios/tensorflow,sarvex/tensorflow,tensorflow/tensorflow,frreiss/tensorflow-fred,tensorflow/tensorflow,annarev/tensorflow,tensorflow/tensorflow,paolodedios/tensorflow,yongtang/tensorflow,frreiss/tensorflow-fred,paolodedios/tensorflow,sarvex/tensorflow,paolodedios/tensorflow,tensorflow/tensorflow,Intel-Corporation/tensorflow,gautam1858/tensorflow,Intel-tensorflow/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,frreiss/tensorflow-fred,Intel-tensorflow/tensorflow,petewarden/tensorflow,yongtang/tensorflow,paolodedios/tensorflow,petewarden/tensorflow