drm/i915/chv: Add new workarounds for chv

+WaForceEnableNonCoherent:chv
+WaHdcDisableFetchWhenMasked:chv

For: VIZ-4090
Signed-off-by: Arun Siluvery <arun.siluvery@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index d43fa0e..97d3479 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -5131,6 +5131,7 @@
 /* GEN8 chicken */
 #define HDC_CHICKEN0				0x7300
 #define  HDC_FORCE_NON_COHERENT			(1<<4)
+#define  HDC_DONOT_FETCH_MEM_WHEN_MASKED	(1<<11)
 #define  HDC_FENCE_DEST_SLM_DISABLE		(1<<14)
 
 /* WaCatErrorRejectionIssue */