MAINTAINERS: Update PowerPC 4xx tree
MAINTAINERS: Update PowerPC 4xx tree

Move the powerpc-4xx.git tree back to kernel.org

Signed-off-by: Josh Boyer <94755a79aca753e683bb6d0e796d473b797056eb@gmail.com>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs