Torch: FR translation

* Patch 2 - Agreed to the comment

Change-Id: I780fb78ce9ad55fb8a889775e3dcf469e4a27e1a
Torch: only write to sysfs if not already on

- SGH-I437 (expressatt) only requires the flash device
  sysfs to be written to one time. When the Torch writes
  to it repeatedly, it causes the flash to cycle between
  highest and lowest brightness.

Change-Id: I41347bc28d625d9497b02ecc94c1e9252d94e4b2