raspberrypi4: Use vc4-fkms-v3d
raspberrypi4: Use vc4-fkms-v3d

Currently, we use vc4-kms-v3d as the default overlay for VC4 but this
seems to break vc4 at runtime on RPi4. Change this to vc4-fkms-v3d for
now as this is the default Raspbian ons as well.

Signed-off-by: Andrei Gherzan <8dc7c09356db0b1762fb140617d7375c0a5a4131@gherzan.ro>

schnitzeltony/meta-raspberrypi,leon-anavi/meta-raspberrypi,agherzan/meta-raspberrypi,agherzan/meta-raspberrypi,agherzan/meta-raspberrypi,schnitzeltony/meta-raspberrypi,agherzan/meta-raspberrypi,agherzan/meta-raspberrypi,agherzan/meta-raspberrypi,leon-anavi/meta-raspberrypi,leon-anavi/meta-raspberrypi,schnitzeltony/meta-raspberrypi