spirv/nir: Add support for ImageQuerySamples

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "12.0" <mesa-dev@lists.freedesktop.org>

src/compiler/spirv/spirv_to_nir.c

@@ -1383,6 +1383,9 @@ vtn_handle_texture(struct vtn_builder *b, SpvOp opcode,
       break;
 
    case SpvOpImageQuerySamples:
+      texop = nir_texop_texture_samples;
+      break;
+
    default:
       unreachable("Unhandled opcode");
    }