MAINTAINERS: Update Nova GPU driver git link

Nova driver development has been moved to a different git repository.
Update the MAINTAINERS entry to reflect that.

Reported-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Philipp Stanner <phasta@kernel.org>
Link: https://patch.msgid.link/20251208140713.41330-3-phasta@kernel.org
Signed-off-by: Danilo Krummrich <dakr@kernel.org>

Author: Philipp Stanner

MAINTAINERS

@@ -8067,7 +8067,7 @@ W:	https://rust-for-linux.com/nova-gpu-driver
 Q:	https://patchwork.freedesktop.org/project/nouveau/
 B:	https://gitlab.freedesktop.org/drm/nova/-/issues
 C:	irc://irc.oftc.net/nouveau
-T:	git https://gitlab.freedesktop.org/drm/nova.git nova-next
+T:	git https://gitlab.freedesktop.org/drm/rust/kernel.git drm-rust-next
 F:	Documentation/gpu/nova/
 F:	drivers/gpu/nova-core/
 
@@ -8079,7 +8079,7 @@ W:	https://rust-for-linux.com/nova-gpu-driver
 Q:	https://patchwork.freedesktop.org/project/nouveau/
 B:	https://gitlab.freedesktop.org/drm/nova/-/issues
 C:	irc://irc.oftc.net/nouveau
-T:	git https://gitlab.freedesktop.org/drm/nova.git nova-next
+T:	git https://gitlab.freedesktop.org/drm/rust/kernel.git drm-rust-next
 F:	Documentation/gpu/nova/
 F:	drivers/gpu/drm/nova/
 F:	include/uapi/drm/nova_drm.h