klte-common: add keydisabler

Change-Id: Ia73270daf4f6d1569d94da85e67a3f2b8925e7c1
Revert "klte-common: add additional permissions to ueventd"

This reverts commit 9201d45ea5669d5b8566c144b35a15412efa4e9e.
Revert "klte-common: correct deviceHardwareKeys overlay."

This reverts commit 6d74493457b0ebe3612e733851a646d63d659b9c.
Revert "klte-common: disable input filtering."

This reverts commit 4401152c404c569bdd1da5d881912f8cc69dffde.