Fix LG G2 Aosp Camera Speed

Stock camera previews and records at 60 fps. Forcing this allows camera app to
allow as it should and work nicely :)

ps2: change fps to 30

Change-Id: I363cc0ab812f87f9ec27c1f198a9ae4b5aa3e2ec
add Device Settings for DT2W
this also reverts http://gerrit.aicp-rom.com/#/c/2433/

this was ported from DU's Device settings for the M8
was modified a bit but authorship goes to jmztaylor

ps2: add build barrier and edit commit message

Change-Id: Icc24cc4e0814758e5ac2ab14f2e5aa6d46dcd84d