Camera: Change copy right year back to 2012

As this is 3rd party file, we shouldn't
change copy right year. Reverting it
back to 2012.

Change-Id: If617e7607cd89b0270aabbe1186190dfe06fe40c
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_packages_apps_Camera2 into cm-11.0