drm/i915: coffeelake supports hdcp2.2

This includes other platforms that utilize the same gen graphics as
CFL: AML, WHL and CML.
Signed-off-by: Juston Li <juston.li@intel.com>
Reviewed-by: Ramalingam C <ramalingam.c@intel.com>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191011181918.29618-1-juston.li@intel.com

drivers/gpu/drm/i915/display/intel_hdcp.c

@@ -1887,7 +1887,7 @@ static bool is_hdcp2_supported(struct drm_i915_private *dev_priv)
 		return false;
 
 	return (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv) ||
-		IS_KABYLAKE(dev_priv));
+		IS_KABYLAKE(dev_priv) || IS_COFFEELAKE(dev_priv));
 }
 
 void intel_hdcp_component_init(struct drm_i915_private *dev_priv)