MD: add myself as MD maintainer

Cc: NeilBrown <neilb@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>

MAINTAINERS

@@ -10022,6 +10022,7 @@ S:	Supported
 F:	drivers/media/pci/solo6x10/
 
 SOFTWARE RAID (Multiple Disks) SUPPORT
+M:	Shaohua Li <shli@kernel.org>
 L:	linux-raid@vger.kernel.org
 S:	Supported
 F:	drivers/md/