Add GLSL_EXT_shader_tile_image

Test/spv.ext.ShaderTileImage.typemismatch.frag

@@ -0,0 +1,13 @@
+#version 320 es
+#extension GL_EXT_shader_tile_image : require
+
+layout(non_coherent_color_attachment_readEXT) in;
+
+layout(location=0) tileImageEXT highp iattachmentEXT in_color_i;
+layout(location=0) out highp vec4 out_color_f;
+
+void main(void)
+{
+     highp ivec4 read = colorAttachmentReadEXT(in_color_i);
+     out_color_f = vec4(read);
+}