tetris: Enforce generic ramdisk allow list

This change enforces that only the list of files on the generic
ramdisk can be installed to the ramdisk of this device.

This is required for all devices using generic ramdisk.

Test: m nothing
Bug: 173742069
Change-Id: Icff7f30b5aef9fdc59b3060316576f1f50b2a92c