PowerHal: Add perflock usage to power hal

-- Add perflock usage to power hal.
-- Add touch boost, encoder boost and low power mode hints. Also, make 2 cores
   online by default when display is ON , while 1 core online when display is
   OFF.
-- Modify mpdecision, system_server and media sepolicy files required for the
   communication.

Change-Id: Idb8958a634a8c8c4b63f7f73a6e1074c845752c0
Signed-off-by: Iliyan Malchev <[email protected]>
7 files changed