intel/fs: Add missing newline

Emacs will add a newline to the end of this file whether I've edited
that line or not. It was driving me up the wall, so... yeah.

Trivial.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23777>

src/intel/compiler/brw_fs.cpp

@@ -8171,4 +8171,4 @@ fs_visitor::workgroup_size() const
 bool brw_should_print_shader(const nir_shader *shader, uint64_t debug_flag)
 {
    return INTEL_DEBUG(debug_flag) && (!shader->info.internal || NIR_DEBUG(PRINT_INTERNAL));
-}
+}