arm: mvebu: crs305-1g-4s: Enable CMD_BOOTZ and increase SYS_BOOTM_LEN
This change enables CMD_BOOTZ and increases SYS_BOOTM_LEN to
make it easier to work with kernel images.
Signed-off-by: Luka Kovacic <me@lukakovacic.xyz>
Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>