hlte-common: add keydisabler

Change-Id: Ia73270daf4f6d1569d94da85e67a3f2b8925e7c1
(cherry picked from commit 088627669cfc54b4c80d1ec5a4e112ca969de23b)
(cherry picked from commit 72643b02c8a446a83e15b07c6f540b9ea656b754)