drm/nouveau/pbus/hwsq: Make code size u16

So we can actually use the full 512 byte code space
Signed-off-by: NRoy Spliet <rspliet@eclipso.eu>
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nvkm/subdev/bus/hwsq.c

@@ -29,7 +29,7 @@ struct nvkm_hwsq {
 	u32 data;
 	struct {
 		u8 data[512];
-		u8 size;
+		u16 size;
 	} c;
 };