ondev-prepare.sh, ondev-prepare-internal-storage.sh: add support for FAT32
While porting for Microsoft Surface RT i got this:
(1217158) [18:43:23] (native) % mkfs.fat -F 32 -n pmOS_inst_boot /dev/installp1
mkfs.fat 4.2 (2021-01-31)
mkfs.fat: Label can be no longer than 11 characters
and mkfs.fat not found while installing on the device.
This MR fixes these issues. Renaming partition labels needs changes in pmbootstrap
and postmarketos-mkinitfs
too, so if new name (pmOS_i_boot
) is OK for you i will submit related MRs there.
See also commit messages.