Recovery: Fix keys for many new devices

cwm 3.0.2.4 had the bad habbit to bind back key to enter,
which is the same function as power key, when there is no
select-button on that device.

many many new (htc) devices got: home | menu | back | search

back should be always back. having back working as enter
button confused the shit out of me.
home/menu was not used. i bound up/down highlight movement to it
back is fixed back. search on the other hand is replacement enter.

so, you can control the whole recovery with those 4 easy-to-reach
keys now. on some devices power/vol+/vol- are kinda hard to reach.

if this patch breaks any other devices i am not aware off, please
handle this issue in another sane way.

Change-Id: Ic9c14e6ae7a8a0f1c9cf5c8895716e5357b3da0e
1 file changed