drm/nouveau/bios: add support for udisp 2.2

Not entirely sure why this got bumped at all yet.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/core/subdev/bios/disp.c

@@ -40,6 +40,7 @@ nvbios_disp_table(struct nouveau_bios *bios,
 				switch (*ver) {
 				case 0x20:
 				case 0x21:
+				case 0x22:
 					*hdr = nv_ro08(bios, data + 0x01);
 					*len = nv_ro08(bios, data + 0x02);
 					*cnt = nv_ro08(bios, data + 0x03);