arm64: dts: imx8mp-navqp: Add HDMI support

The HDMI connector on the board is a micro-HDMI (type "d")

Signed-off-by: Gilles Talis <gilles.talis@gmail.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>