drm/i915/hdcp: migrate away from kdev_to_i915() in bind/unbind

Use to_intel_display() instead of kdev_to_i915() in the HDCP component
API hooks. Avoid further drive-by changes at this point, and just
convert the display pointer to i915, and leave the struct intel_display
conversion for later.
Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/0beedaa438e912828b48d9980f017807e079d7ab.1724942754.git.jani.nikula@intel.comSigned-off-by: Jani Nikula <jani.nikula@intel.com>

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

@@ -2181,10 +2181,11 @@ static void intel_hdcp_check_work(struct work_struct *work)
 				   DRM_HDCP_CHECK_PERIOD_MS);
 }
 
-static int i915_hdcp_component_bind(struct device *i915_kdev,
+static int i915_hdcp_component_bind(struct device *drv_kdev,
 				    struct device *mei_kdev, void *data)
 {
-	struct drm_i915_private *i915 = kdev_to_i915(i915_kdev);
+	struct intel_display *display = to_intel_display(drv_kdev);
+	struct drm_i915_private *i915 = to_i915(display->drm);
 
 	drm_dbg(&i915->drm, "I915 HDCP comp bind\n");
 	mutex_lock(&i915->display.hdcp.hdcp_mutex);
@@ -2195,10 +2196,11 @@ static int i915_hdcp_component_bind(struct device *i915_kdev,
 	return 0;
 }
 
-static void i915_hdcp_component_unbind(struct device *i915_kdev,
+static void i915_hdcp_component_unbind(struct device *drv_kdev,
 				       struct device *mei_kdev, void *data)
 {
-	struct drm_i915_private *i915 = kdev_to_i915(i915_kdev);
+	struct intel_display *display = to_intel_display(drv_kdev);
+	struct drm_i915_private *i915 = to_i915(display->drm);
 
 	drm_dbg(&i915->drm, "I915 HDCP comp unbind\n");
 	mutex_lock(&i915->display.hdcp.hdcp_mutex);