drm/i915: Fix platform coverage for HDCP1.4

HDCP1.4 is enabled and validated only on GEN9+ platforms.

v2:
  Removed the unnecessary parens [Ville]
Signed-off-by: NRamalingam C <ramalingam.c@intel.com>
Reviewed-by: NSean Paul <sean@poorly.run>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/1544010283-20223-3-git-send-email-ramalingam.c@intel.com

drivers/gpu/drm/i915/intel_hdcp.c

@@ -769,8 +769,7 @@ static void intel_hdcp_prop_work(struct work_struct *work)
 bool is_hdcp_supported(struct drm_i915_private *dev_priv, enum port port)
 {
 	/* PORT E doesn't have HDCP, and PORT F is disabled */
-	return ((INTEL_GEN(dev_priv) >= 8 || IS_HASWELL(dev_priv)) &&
-		!IS_CHERRYVIEW(dev_priv) && port < PORT_E);
+	return INTEL_GEN(dev_priv) >= 9 && port < PORT_E;
 }
 
 int intel_hdcp_init(struct intel_connector *connector,