linux-phytec-ti

ARM: dts: am437x-epos-evm: add HDMI support

Add HDMI support for AM43x EPOS EVM. The HDMI uses SiI9022 HDMI
encoder for audio and display, and it is mutually exclusive with the
LCD and analogue audio. The choice between LCD + analogue audio and
HDMI + HDMI-audio is made by booting either with am43x-epos-evm.dtb or
am43x-epos-evm-hdmi.dtb.

Signed-off-by: Jyri Sarha <jsarha@ti.com>