linux-imx

drm/mediatek: use platform_register_drivers

Use platform_register_drivers instead of open coding the iteration over
component platform drivers in the mtk_drm_drv and mtk_hdmi modules.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: CK Hu <ck.hu@mediatek.com>