drm/i915: don't apply WaFbcAsynchFlipDisableFbcQueue on SKL

This WA is only for HSW/BDW.
Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: NPaulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/intel_fbc.c

@@ -277,7 +277,7 @@ static void gen7_fbc_enable(struct intel_crtc *crtc)
 		I915_WRITE(ILK_DISPLAY_CHICKEN1,
 			   I915_READ(ILK_DISPLAY_CHICKEN1) |
 			   ILK_FBCQ_DIS);
-	} else {
+	} else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
 		/* WaFbcAsynchFlipDisableFbcQueue:hsw,bdw */
 		I915_WRITE(CHICKEN_PIPESL_1(crtc->pipe),
 			   I915_READ(CHICKEN_PIPESL_1(crtc->pipe)) |