Try this:
sudo mkdir /lib/firmware/edid
sudo touch /lib/firmware/edid/dummy.bin
then edit /boot/cmdline.txt so it looks like this:
root=/dev/mmcblk0p2 rootfstype=ext4 rootwait quiet osmcdev=rbp2 drm.edid_firmware=HDMI-A-1:edid/dummy.bin video=HDMI-A-1:D
That will get you in. Kodi seems to running. I can’t get anything to play through Chorus2 but then I never could.
I looked for a way for video to show up if you subsequently plug in HDMI but without success. Can’t believe RPi devs designed it like that with so many Pis not connected to a display.