northbridge/intel/pineview: Add remaining boilerplate code for northbridge

This patch does *not* include native raminit

Change-Id: I3fb8146ef7fe2ad27c167ecd2fb0fd629f051cc1
Signed-off-by: Damien Zammit <damien@zamaudio.com>
Reviewed-on: https://review.coreboot.org/12430
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)

src/northbridge/intel/pineview/chip.h

@@ -0,0 +1,8 @@
+#include <drivers/intel/gma/i915.h>
+
+struct northbridge_intel_pineview_config {
+	u32 gpu_hotplug;
+	u32 gpu_backlight;
+	int gpu_lvds_use_spread_spectrum_clock;
+	struct i915_gpu_controller_info gfx;
+};