drm/i915: Fix the device info of Pineview

Pineview doesn't has CXSR and need GTT-based hardware status page.
It fixes a X boot hung issue on Pinview since commit cfdf1f

Signed-off-by: Li Peng <peng.li@intel.com>
Acked-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>

drivers/gpu/drm/i915/i915_drv.c

@@ -120,7 +120,7 @@ const static struct intel_device_info intel_gm45_info = {
 
 const static struct intel_device_info intel_pineview_info = {
 	.is_g33 = 1, .is_pineview = 1, .is_mobile = 1, .is_i9xx = 1,
-	.has_pipe_cxsr = 1,
+	.need_gfx_hws = 1,
 	.has_hotplug = 1,
 };