[ARM] 4428/1: modify at91 includes to handle non-MMU at91x40 family

Modify the common at91 hardware support to deal with the non-MMU
at91x40 family. The base RAM (which is most likely not DRAM) is
set to the configured value. Virtual IO device mapping is set
to be 1 to 1 with the physical addresses.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>