Add lockscreen rotation as an optional rotation setting (1/2)

This will allow the user to select wether or not to use the
rotation settings for the lockscreen.  This is dependent
upon the rotation setting being checked.

Forward port from cm-10.2, adjusted for 4.4

Signed-off-by: Michael Bestas <mikeioannina@gmail.com>

Change-Id: Ibd7c69b0af1e0a7d91b985f2b21ea0b5bc619a70