intel: integer_mad_hi / integer_mad_sat / integer_mul_hi produce invalid results
On Intel the integer_mad_hi / integer_mad_sat / integer_mul_hi test cases in the OpenCL CTS test_integer_ops
test group produce invalid results. Reportedly the cause is Op[US]MulExtended
being buggy.
Found by Romaric Jodin; reported originally as https://issuetracker.google.com/227134187
Edited by Faith Ekstrand