[MIPS] 4.2 Need a change for pull request.

It seem reasonable to clearly specify which branch we are on;
similar to the kernel Makefile versions.

Signed-off-by: Pete Delaney <piet.delaney@imgtec.com>
Merge pull request #2 from piet-delaney/Android-4.2

[MIPS] 4.2 Need a change for pull request.