smdk4412-common: camera: Don't set focus to FOCUS_MODE_TOUCH after taking a picture

After picture has been taken in stock camera app, FocusAreas is resetted to the center
of the preview screen, causing the HAL to detect the non (0,0,0,0,0) as a tap in the
screen.

Change-Id: Id41d108c6bb59a05a0a98efbaef51d14f50741fd
smdk4412-common: camera: release face detection memory when capture stops

Change-Id: I6724ce6dde3c4b6242a06b73808905a6de094d4a
smdk4412-common: audio: remove old workaround for call audio issues

Recent commits to audio routing have fixed the first call microphone
issues and this hacky workaround is no longer required.

Change-Id: I90ae0f20b4f7f734135fb3fae41eae0fe3289aa5