fixup clang default targets
for armhf at least, it is wrong:
- gcc does
--with-arch=armv6zk
, which is a 'wrong' name forarmv6kz
- when building something that uses k with clang:
../../deps/v8/src/objects/js-atomics-synchronization.cc:338:9: error: instruction requires: armv6k
YIELD_PROCESSOR;
^
../../deps/v8/src/base/platform/yield-processor.h:45:46: note: expanded from macro 'YIELD_PROCESSOR'
#define YIELD_PROCESSOR __asm__ __volatile__("yield")
evidently, the clang default is not v6zk like it is for gcc. should make sure they're the same on all the targets