Revert "Revert "klte-common: set long-press on HOME key to search assistant""

This reverts commit 60fb46aa241157776945b53151a1052c264da7dc.
hlte-common: add keydisabler

Change-Id: Ia73270daf4f6d1569d94da85e67a3f2b8925e7c1
(cherry picked from commit 088627669cfc54b4c80d1ec5a4e112ca969de23b)
(cherry picked from commit 72643b02c8a446a83e15b07c6f540b9ea656b754)
klte-common: disable input filtering.

* Suppose to reduce latency.

Change-Id: I7cab9115abf600925aa02792451222db305d418b
(cherry picked from commit 15b58f07812e0fbb51bb66766bf5c67d29ef58a0)
(cherry picked from commit 0a6c371f0b7a828d1a0d83c60ce4b924ccb6393c)

Conflicts:
	system_prop.mk