endeavoru: Change storage layout (experimental and WIP)

Change-Id: I6bda6994ec9a9ca8a81ad6dab3bf3b7add3faf90

Conflicts:
	device.mk
	overlay/frameworks/base/core/res/res/xml/storage_list.xml
	ramdisk/fstab.endeavoru
	ramdisk/init.endeavoru.cm.rc
	ramdisk/init.endeavoru.common.rc