Make TARGET=GENERIC compatible with DYNAMIC_ARCH=1
Make TARGET=GENERIC compatible with DYNAMIC_ARCH=1

for issue #2048
xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS