Add some more flags to CLANG_CONFIG_UNKNOWN_CFLAGS
Add some more flags to CLANG_CONFIG_UNKNOWN_CFLAGS

Add some more gcc specific flags that are used somewhere in the tree
(e.g. external/chromium_org) to CLANG_CONFIG_UNKNOWN_CFLAGS

Change-Id: Icc572fdb6ea4ba818c4d18e430296589eb61bf55
Signed-off-by: Bernhard Rosenkraenzer <0363de98439ff22157633d0b0c13ae8bbe3d448c@linaro.org>

xorware/android_build,xorware/android_build,xorware/android_build,xorware/android_build,xorware/android_build