[ARM] 4613/1: pxa300: MFP typo fix

This fixes a typo in MFP address map.

Signed-off-by: Aleksey Makarov <amakarov@ru.mvista.com>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>