Move CONFIG_DDR_32BIT/64BIT to Kconfig as a choice for Armada XP platforms. Make 64bit the default as this mirrors the current code. Signed-off-by: Tom Rini <trini@konsulko.com> Acked-by: Marek Behún <marek.behun@nic.cz> Reviewed-by: Stefan Roese <sr@denx.de>