Add hdmi/dp drm architecture driver.
HDMI and DP driver can work in imx8qm ARM2 board.
The driver support basic hotplug function.
Default working mode is 1080p60.

Acked-by: Robby Cai <robby.cai@nxp.com>
Signed-off-by: Sandor Yu <Sandor.yu@nxp.com>
Signed-off-by: Oliver Brown <oliver.brown@nxp.com>
(Vipul: Fixed merge conflicts)
Signed-off-by: Vipul Kumar <vipul_kumar@mentor.com>
Signed-off-by: Srikanth Krishnakar <Srikanth_Krishnakar@mentor.com>