math.h: Set HAVE_HW_FMA32 based on compiler provided macro

Fixes sin/cos piglits on non-FMA capable asics.
Bugzilla: https://bugs.llvm.org/show_bug.cgi?id=35983

Reviewer: Tom Stellard
Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
llvm-svn: 323677
GitOrigin-RevId: 0ecb5e511e67c4ee8264de7d15a47ac6c84a55cd
1 file changed