pmos_install: disable huge_file option in mkfs.ext4

This fixes an issue where the installer would break at the mounting script, and the following message would be displayed in the kernel logs:

[mount] EXT4-fs (dm-1): Filesystem with huge files cannot be mounted RDWR without CONFIG_LBDAF

I'm quite sure there aren't that much devices which would require huge_file-capable filesystems anyways, but if it turns out to be necessary, it's always possible to implement an install option that leaves the huge_file option enabled.