Revert "init: remove tunables"

This reverts commit 3e261bab45de2315d3b95a7b98c9318f1cfa1845.
Enable Apps to SD

-Due to some recent commits by Carbon we have more fined grained
control over which "sdcard" gets used for the built in "Apps to SD"
functionality. This commit configures sdcard1 as the sdcard to
use when moving Apps.