MAINTAINERS: drm: vc4: Add Raspberry Pi as maintainers

Add myself as maintainer for VC4 alongside Maxime, and
our internal review list as reviewer.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Acked-by: Daniel Stone <daniels@collabora.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240621131926.3133484-1-dave.stevenson@raspberrypi.com

MAINTAINERS

@@ -7520,6 +7520,8 @@ F:	include/uapi/drm/v3d_drm.h
 
 DRM DRIVERS FOR VC4
 M:	Maxime Ripard <mripard@kernel.org>
+M:	Dave Stevenson <dave.stevenson@raspberrypi.com>
+R:	Raspberry Pi Kernel Maintenance <kernel-list@raspberrypi.com>
 S:	Supported
 T:	git git://github.com/anholt/linux
 T:	git https://gitlab.freedesktop.org/drm/misc/kernel.git