drm/i915: Disable gpu reset on i965g/gm

Ville figured out that it needs a full display reset since apparently
a lot more goes down than just the GT. Until that's address it's
better to just diable gpu reset.
Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/intel_uncore.c

@@ -965,6 +965,9 @@ static int i965_do_reset(struct drm_device *dev)
 {
 	int ret;
 
+	/* FIXME: i965g/gm need a display save/restore for gpu reset. */
+	return -ENODEV;
+
 	/*
 	 * Set the domains we want to reset (GRDOM/bits 2 and 3) as
 	 * well as the reset bit (GR/bit 0).  Setting the GR bit