i965: enable ARB_enhanced_layouts for gen8+

Acked-by: Edward O'Callaghan <funfunctor@folklore1984.net>

src/mesa/drivers/dri/i965/intel_extensions.c

@@ -383,6 +383,7 @@ intelInitExtensions(struct gl_context *ctx)
    }
 
    if (brw->gen >= 8) {
+      ctx->Extensions.ARB_enhanced_layouts = true;
       ctx->Extensions.ARB_shader_precision = true;
       ctx->Extensions.ARB_stencil_texturing = true;
       ctx->Extensions.ARB_texture_stencil8 = true;