Add -Wno-inline-asm to Clang flags.
Add -Wno-inline-asm to Clang flags.

The latest clang (r230699) does not allow SP/PC to be declared in inline asm
lists. This is a problem for libraries that are attempting to save all
register state.

Change-Id: I3e49d38d6812c43be4ab0546fcc07a8c00382f19

zeldin/platform_external_libunwind,geekboxzone/mmallow_external_libunwind,geekboxzone/mmallow_external_libunwind,zeldin/platform_external_libunwind,SyndicateRogue/libunwind,SyndicateRogue/libunwind,geekboxzone/mmallow_external_libunwind,SyndicateRogue/libunwind,zeldin/platform_external_libunwind