drm/i915: Restore skl_gt3 device info

This was broken in

commit 6a8beeff
Author: Wayne Boyer <wayne.boyer@intel.com>
Date:   Wed Dec 2 13:28:14 2015 -0800

    drm/i915: Clean up device info structure definitions

and I didn't spot this while reviewing. We really need that CI farm up
asap!
Reported-by: NChris Wilson <chris@chris-wilson.co.uk>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Wayne Boyer <wayne.boyer@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@intel.com>

drivers/gpu/drm/i915/i915_drv.c

@@ -324,6 +324,7 @@ static const struct intel_device_info intel_skylake_info = {
 };
 
 static const struct intel_device_info intel_skylake_gt3_info = {
+	HSW_FEATURES,
 	.is_skylake = 1,
 	.gen = 9,
 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING | BSD2_RING,