[POWERPC] Add co-maintainer for PowerPC MPC52xx platform

Added at the request of Sylvain Munaut.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Sylvain Munaut <tnt@246tnt.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index d47367f6..146d0c6 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2288,6 +2288,8 @@
 LINUX FOR POWERPC EMBEDDED MPC52XX
 P:	Sylvain Munaut
 M:	tnt@246tNt.com
+P:	Grant Likely
+M:	grant.likely@secretlab.ca
 W:	http://www.246tNt.com/mpc52xx/
 W:	http://www.penguinppc.org/
 L:	linuxppc-dev@ozlabs.org