MAINTAINERS: change maintainership of mpc5xxx

Grant intends to hand over maintainership of mpc5xxx
to me. Change MPC5XXX entry in MAINTAINERS accordingly.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
1 file changed