MAINTAINERS: Add a patchwork entry for ARM/SH-Mobile.

Since this overlaps with the sh list, we invariably end up using the same
patchwork queue. Reference it explicitly to save people from having to do
a reverse lookup from the SH entry.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

MAINTAINERS

@@ -949,8 +949,9 @@ ARM/SHMOBILE ARM ARCHITECTURE
 M:	Paul Mundt <lethal@linux-sh.org>
 M:	Magnus Damm <magnus.damm@gmail.com>
 L:	linux-sh@vger.kernel.org
-T:	git git://git.kernel.org/pub/scm/linux/kernel/git/lethal/genesis-2.6.git
 W:	http://oss.renesas.com
+Q:	http://patchwork.kernel.org/project/linux-sh/list/
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/lethal/genesis-2.6.git
 S:	Supported
 F:	arch/arm/mach-shmobile/
 F:	drivers/sh/