We no longer use raw mode to boot from MMC for our devices in favor
of FAT filesystem.
Maintaining this config for legacy gen5 devices as to not risk breaking
any configurations still utilizing raw mode.
Signed-off-by: Alif Zakuan Yuslaimi <alif.zakuan.yuslaimi@altera.com>
Reviewed-by: Tien Fong Chee <tien.fong.chee@altera.com>