Revert "remove unneccessary files from ramdisk"

This reverts commit 63dd5c41ac397389e029d140405a85186c1e807b.

Conflicts:
	device_s2ve.mk
Revert "initial support for f2fs"

This reverts commit 85ea6b575472d4cc90d2d98930531f81019d63f3.

Conflicts:
	device_s2ve.mk