drm: of: Make use of the helper component_release_of

Use the common release helper from component.

Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Link: https://lore.kernel.org/r/20220214060819.7334-19-yong.wu@mediatek.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>