smdk4412: camera: include support for snapshot while recording

Change-Id: Iaaa23dea17e496b4e4cc8090fe35df33f0204a2f

Patchset: 2
http://review.cyanogenmod.org/#/c/50600/
(cherry picked from commit 34a62add13e1b1479020306699ee76b405a8a898)