galaxys2: re-add disable hardware keyboard "hack"

Until we can find out what Xplodwild's "proper" fix for the
config_forceDisableHardwareKeyboard overlay is, we'll need to re-add
it so that the n7000 doesn't switch the keyboard on by default and
prevent users from entering text during SetupWizard.

Change-Id: I34ea67f28002c99351447cb07f5653601a573ef6
Requires: https://gerrit.slimroms.net/#/c/1131/