imx-drm: imx-drm-core: provide common connector and encoder cleanup functions

Provide two helper functions to assist with cleaning up imx-drm
connectors and encoders.
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

drivers/staging/imx-drm/imx-drm-core.c

@@ -363,6 +363,19 @@ static void imx_drm_connector_unregister(
 	drm_mode_group_reinit(imxdrm->drm);
 }
 
+void imx_drm_connector_destroy(struct drm_connector *connector)
+{
+	drm_sysfs_connector_remove(connector);
+	drm_connector_cleanup(connector);
+}
+EXPORT_SYMBOL_GPL(imx_drm_connector_destroy);
+
+void imx_drm_encoder_destroy(struct drm_encoder *encoder)
+{
+	drm_encoder_cleanup(encoder);
+}
+EXPORT_SYMBOL_GPL(imx_drm_encoder_destroy);
+
 static struct drm_mode_config_funcs imx_drm_mode_config_funcs = {
 	.fb_create = drm_fb_cma_create,
 };

drivers/staging/imx-drm/imx-drm.h

@@ -8,6 +8,7 @@
 struct drm_crtc;
 struct drm_connector;
 struct drm_device;
+struct drm_display_mode;
 struct drm_encoder;
 struct imx_drm_crtc;
 struct drm_fbdev_cma;
@@ -69,5 +70,7 @@ int imx_drm_encoder_parse_of(struct drm_device *drm,
 
 int imx_drm_connector_mode_valid(struct drm_connector *connector,
 	struct drm_display_mode *mode);
+void imx_drm_connector_destroy(struct drm_connector *connector);
+void imx_drm_encoder_destroy(struct drm_encoder *encoder);
 
 #endif /* _IMX_DRM_H_ */