Don't remove SPV_INTEL_optimization_hints declaration

Signed-off-by: Dmitry Sidorov <dmitry.sidorov@intel.com>

Author: MrSidims

include/LLVMSPIRVExtensions.inc

@@ -22,6 +22,7 @@ EXT(SPV_INTEL_kernel_attributes)
 EXT(SPV_INTEL_io_pipes)
 EXT(SPV_INTEL_inline_assembly)
 EXT(SPV_INTEL_arbitrary_precision_integers)
+EXT(SPV_INTEL_optimization_hints)
 EXT(SPV_INTEL_float_controls2)
 EXT(SPV_INTEL_vector_compute)
 EXT(SPV_INTEL_fast_composite)