Add compile time assert for invalid GRF sizes

Signed-off-by: Sarnie, Nick <[email protected]>

Author: sarnex

sycl/include/sycl/ext/intel/experimental/grf_size_properties.hpp

@@ -63,6 +63,7 @@ struct IsCompileTimeProperty<
 template <unsigned int Size>
 struct PropertyMetaInfo<
     sycl::ext::intel::experimental::grf_size_key::value_t<Size>> {
+  static_assert(Size == 128 || Size == 256, "Unsupported GRF size");
   static constexpr const char *name = "sycl-grf-size";
   static constexpr unsigned int value = Size;
 };