tps61310: Move flashlight_off to suspend handler

* Early suspend is kind of stupid in this driver, move the call to

flashlight_off to the full suspend handler instead.
* This should let
the flashlight remain on when the display is inactive,
  by having
userspace grab a PARTIAL_WAKE_LOCK if needed.

Change-Id:
Ifb6d37f9323afa0f10d5797bab3880fe051c1dff

idea is taken here -
https://github.com/jrior001/Torched_kernel/commit/899e3d5fce2f9be537296a909bcc4563a86ac318