Pass user options to clang.
Pass user options to clang.

clang do not support all options in opencl.
clang unsupport options:
       -cl-denorms-are-zero, -cl-strict-aliasing
       -cl-no-signed-zeros, -cl-fp32-correctly-rounded-divide-sqrt
all support options, refer to clang/include/clang/Driver/Options.inc
Can ignore these options to avoid warning.

Signed-off-by: Yang Rong <78759e37dc7114caed18f74e7515c5cb519dbf6d@intel.com>
Reviewed-by: Zhigang Gong <e04a7b9b70b1e4c6318cf117dcd1a9056e14b97a@linux.intel.com>

ignatenkobrain/beignet,ignatenkobrain/beignet,zhenyw/beignet,ignatenkobrain/beignet,ignatenkobrain/beignet,zhenyw/beignet,wdv4758h/beignet,wdv4758h/beignet,zhenyw/beignet,freedesktop-unofficial-mirror/beignet,freedesktop-unofficial-mirror/beignet,freedesktop-unofficial-mirror/beignet,zhenyw/beignet,wdv4758h/beignet,wdv4758h/beignet,wdv4758h/beignet,freedesktop-unofficial-mirror/beignet,ignatenkobrain/beignet,zhenyw/beignet