Revert "Revert "Revert "ramdisk: init: Fix boot hang"""

This reverts commit 55198b053205397ca929a3a141fcdedb7c37d785.
fstab: use actual partition paths for firmware mounts

Change-Id: I34cc29635befb5e2bfdf97bf2f1fc8d0b73169a5
ramdisk: update load-modem.sh permissions

Change-Id: I179d7e2c13d6fb090f2ca88304841e114013acbb