mapi: Enable assembly language API acceleration for PPC64LE (V2)

Implement assembly language API acceleration for PPC64LE,
analogous to long-standing implementations for X86 and X86-64.

See also similar implementation in libglvnd.

Tested with Piglit.

Signed-off-by: Ben Crocker <bcrocker@redhat.com>
Acked-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Bill Schmidt <wschmidt@linux.vnet.ibm.com>
5 files changed