libclc/asin: Switch to amd builtins version of asin

Fixes a wimpy-mode CTS failure for asin(float).

Passes non-wimpy for both float/double on RX580.

Signed-off-by: Aaron Watry <awatry@gmail.com>
Tested-by: Jan Vesely <jan.vesely@rutgers.edu>
Reviewed-by: Jan Vesely <jan.vesely@rutgers.edu>