linux-rpi.inc: add the configuration options required to support vc4graphics
linux-rpi.inc: add the configuration options required to support vc4graphics

Signed-off-by: Herve Jourdain <a2a574f9705513524542f7fbeb45f80d5b3c0599@neuf.fr>

d21d3q/meta-raspberrypi,agherzan/meta-raspberrypi,kraj/meta-raspberrypi,schnitzeltony/meta-raspi-light,d21d3q/meta-raspberrypi,d21d3q/meta-raspberrypi,d21d3q/meta-raspberrypi,toolmmy/meta-raspberrypi,agherzan/meta-raspberrypi,LocutusOfBorg/meta-raspberrypi,LocutusOfBorg/meta-raspberrypi,toolmmy/meta-raspberrypi,schnitzeltony/meta-raspberrypi,kraj/meta-raspberrypi,agherzan/meta-raspberrypi,agherzan/meta-raspberrypi,schnitzeltony/meta-raspberrypi,leon-anavi/meta-raspberrypi,leon-anavi/meta-raspberrypi,schnitzeltony/meta-raspi-light,LocutusOfBorg/meta-raspberrypi,leon-anavi/meta-raspberrypi,toolmmy/meta-raspberrypi,toolmmy/meta-raspberrypi,agherzan/meta-raspberrypi,schnitzeltony/meta-raspberrypi,kraj/meta-raspberrypi,agherzan/meta-raspberrypi,LocutusOfBorg/meta-raspberrypi