arm: socfpga: soc64: Add support for board_boot_order()

Add board_boot_order() to retrieve the list of boot devices from
spl-boot-order property in device tree. This board_boot_order()
would be used for all Intel SOC64 devices.

Signed-off-by: Tien Fong Chee <tien.fong.chee@altera.com>
1 file changed