northbridge/intel/x4x: Intel 4-series northbridge support

Boots to console on Gigabyte GA-G41M-ES2L

Ram initialization *not* included in this patch
VGA native init works on analog connector

Change-Id: I5262f73fd03d5e5c12e9f11d027bdfbbf0ddde82
Signed-off-by: Damien Zammit <damien@zamaudio.com>
Reviewed-on: https://review.coreboot.org/11305
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
diff --git a/src/northbridge/intel/x4x/chip.h b/src/northbridge/intel/x4x/chip.h
new file mode 100644
index 0000000..1fb54cc
--- /dev/null
+++ b/src/northbridge/intel/x4x/chip.h
@@ -0,0 +1,26 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2015  Damien Zammit <damien@zamaudio.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef NORTHBRIDGE_INTEL_X4X_CHIP_H
+#define NORTHBRIDGE_INTEL_X4X_CHIP_H
+
+#include <drivers/intel/gma/i915.h>
+
+struct northbridge_intel_x4x_config {
+	struct i915_gpu_controller_info gfx;
+};
+
+#endif