nb/intel/pineview: Native VGA init (CRT)

VGA grub console works but display wobbles left/right

drm/i915 driver reports one error:
- [drm:i915_irq_handler] *ERROR* pipe A underrun
- Monitor does not display 1920x1080 after modeset
- Other resolutions look out of sync

Cause: suspect single bug in raminit (chipset init)

Change-Id: I2dcf59f8f30efe98f17a937bf98f5ab7221fc3ac
Signed-off-by: Damien Zammit <damien@zamaudio.com>
Reviewed-on: https://review.coreboot.org/12921
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>

src/northbridge/intel/pineview/chip.h

@@ -1,8 +1,9 @@
 #include <drivers/intel/gma/i915.h>
 
 struct northbridge_intel_pineview_config {
-	u32 gpu_hotplug;
-	u32 gpu_backlight;
+	/* GMA */
+	bool use_crt;
+	bool use_lvds;
 	int gpu_lvds_use_spread_spectrum_clock;
 	struct i915_gpu_controller_info gfx;
 };