compiler: int8/uint8 support

OpenCL kernels also have int8/uint8.

v2: remove changes in nir_search as Jason posted a patch for that

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Karol Herbst <kherbst@redhat.com>

src/compiler/nir/nir.h

@@ -735,6 +735,10 @@ nir_get_nir_type_for_glsl_base_type(enum glsl_base_type base_type)
    case GLSL_TYPE_INT16:
       return nir_type_int16;
       break;
+   case GLSL_TYPE_UINT8:
+      return nir_type_uint8;
+   case GLSL_TYPE_INT8:
+      return nir_type_int8;
    case GLSL_TYPE_UINT64:
       return nir_type_uint64;
       break;