drm/imx: move imx_drm_connector_destroy to imx-tve

The imx-tve driver is the only remaining user of
imx_drm_connector_destroy(). Move the function to imx-tve.c

Reviewed-by: Philipp Zabel <[e-mail]>
Acked-by: Rob Herring <[e-mail]>
Tested-by: Chris Healy <[e-mail]>
Tested-by: Philipp Zabel <[e-mail]> # on imx6q-nitrogen6x
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]
Signed-off-by: Dmitry Baryshkov <[e-mail]>

drivers/gpu/drm/imx/ipuv3/imx-drm-core.c

···
 
 DEFINE_DRM_GEM_DMA_FOPS(imx_drm_driver_fops);
 
-void imx_drm_connector_destroy(struct drm_connector *connector)
-{
-	drm_connector_unregister(connector);
-	drm_connector_cleanup(connector);
-}
-EXPORT_SYMBOL_GPL(imx_drm_connector_destroy);
-
 static int imx_drm_atomic_check(struct drm_device *dev,
 				struct drm_atomic_state *state)
 {

drivers/gpu/drm/imx/ipuv3/imx-drm.h

···
 int imx_drm_encoder_parse_of(struct drm_device *drm,
 	struct drm_encoder *encoder, struct device_node *np);
 
-void imx_drm_connector_destroy(struct drm_connector *connector);
-
 int ipu_planes_assign_pre(struct drm_device *dev,
 			  struct drm_atomic_state *state);
 

drivers/gpu/drm/imx/ipuv3/imx-tve.c

···
 	return 0;
 }
 
+static void imx_tve_connector_destroy(struct drm_connector *connector)
+{
+	drm_connector_unregister(connector);
+	drm_connector_cleanup(connector);
+}
+
 static const struct drm_connector_funcs imx_tve_connector_funcs = {
 	.fill_modes = drm_helper_probe_single_connector_modes,
-	.destroy = imx_drm_connector_destroy,
+	.destroy = imx_tve_connector_destroy,
 	.reset = drm_atomic_helper_connector_reset,
 	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
 	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,