Set oppo-app to 1 for Oppo camera HALs

These HALs behave differently when oppo-app is set to 1.

For example, 4k video recording is only available when this is 1.

TODO: This may be needed for more than just video, we may want to
set it elsewhere.

Change-Id: I9262479314917fb9e0c6397a07417a646f0210c7