media_codecs: Don't try to use absent VP8 decoder

Change-Id: Ie4882b2e7dc675fda1b1cc4295f2a95d7d7c4482
smdk4412-common: rename Gallery2 -> Camera2

Change-Id: Id8d11bb4a864060d0bc49fd9da28c4ca09c851d6

Conflicts:

	overlay/packages/apps/Camera2/res/values/config.xml