drm/i915/skl: Introduce a SKL specific init_workarounds()

This function will host SKL-only W/As.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Nick Hoath <nicholas.hoath@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/intel_ringbuffer.c

@@ -984,6 +984,13 @@ static int gen9_init_workarounds(struct intel_engine_cs *ring)
 	return 0;
 }
 
+static int skl_init_workarounds(struct intel_engine_cs *ring)
+{
+	gen9_init_workarounds(ring);
+
+	return 0;
+}
+
 int init_workarounds_ring(struct intel_engine_cs *ring)
 {
 	struct drm_device *dev = ring->dev;
@@ -999,7 +1006,9 @@ int init_workarounds_ring(struct intel_engine_cs *ring)
 	if (IS_CHERRYVIEW(dev))
 		return chv_init_workarounds(ring);
 
-	if (IS_GEN9(dev))
+	if (IS_SKYLAKE(dev))
+		return skl_init_workarounds(ring);
+	else if (IS_GEN9(dev))
 		return gen9_init_workarounds(ring);
 
 	return 0;