arm: mvebu: Use MVEBU_SPL_BOOT_DEVICE instead of SPL_BOOT_DEVICE

Update the way KWB_CFG_SEC_BOOT_DEV is determined to use
CONFIG_MVEBU_SPL_BOOT_DEVICE_{SPI,MMC} instead of
CONFIG_SPL_BOOT_DEVICE.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
1 file changed