This will also enable the command "fatwrite" enabling the
user to write files to FAT.
-- CBFS (Coreboot Filesystem) support:
- CONFIG_CMD_CBFS
-
- Define this to enable support for reading from a Coreboot
- filesystem. Available commands are cbfsinit, cbfsinfo, cbfsls
- and cbfsload.
-
- FAT(File Allocation Table) filesystem cluster size:
CONFIG_FS_FAT_MAX_CLUSTSIZE