85xx: Added support for P1011RDB and P2010RDB

P1011 and P2010 are single core variants of P1010 and P2020 respectively.
The board(RDB) will be same.

Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>