[POWERPC] 83xx: add MPC837x RDB platform support

primarily based on mpc837x mds code.

Signed-off-by: Joe D'Abbraccio <ljd015@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
3 files changed