i9500: Switch to powersave governor for LPM

Change-Id: I761b685030d7a36126e042ad2e9d22c9a518a99b
i9500: Remove useless overlay option

Change-Id: I590849cda8df38e36008accd60b1f39119a7022b
Merge branch 'cm-11.0' into kk_mkt