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Draft: [E09][VIDEO] move hdmi to vp0 to support 4k

Alessandro Pecugi requested to merge ap/e09-fix-video into seco_5.10.110

Move HDMI output from vp1 to vp0, which is the only video port in which HDMI supports 4K.

Due to a hardware bug, in E09 REVA the kernel cannot fetch the EDID from the monitor, so the correct resolution has to be forced by adding video=HDMI-A-1:3840x2160@30 in the kernel cmdline args and adding the following to /etc/xdg/weston/weston.ini:

[output]
name=HDMI-A-1
mode=3840x2160@30

Forcing the resolution this way only works for 4K @ 30Hz but not @ 60Hz: after setting video=HDMI-A-1:3840x2160@60 this mode doesn't appear in cat /sys/class/drm/card0-HDMI-A-1/modes and it falls back to the default resolution.

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