Move cl_khr_fp64 exntension enablement to gentype include lists

This will make adding cl_khr_fp16 support easier

Reviewed-by: Aaron Watry <awatry@gmail.com>
Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
llvm-svn: 326816
GitOrigin-RevId: dbaf6d0f7ce8d4f590e0ec929726b3085ffc1799
26 files changed