MAINTAINERS: Add Chen Ridong as cpuset reviewer

Add Chen Ridong as a reviewer for the cpuset cgroup subsystem.

Signed-off-by: Waiman Long <[email protected]>
Acked-by: Chen Ridong <[email protected]>
Signed-off-by: Tejun Heo <[email protected]>

Author: Waiman-Long

MAINTAINERS

@@ -6402,6 +6402,7 @@ F:	include/linux/blk-cgroup.h
 
 CONTROL GROUP - CPUSET
 M:	Waiman Long <[email protected]>
+R:	Chen Ridong <[email protected]>
 L:	[email protected]
 S:	Maintained
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git