camera: Fix preview on SEMC msm7x30 devices

Signed-off-by: Michael Bestas <mikeioannina@gmail.com>

Change-Id: I79039636ae188131b491c90cfe7894ff32d8ef2a
libstagefright: support for disabling buffer metadata

- Metada mode video recording is enabled by default.
- use setprop debug.camcorder.disablemeta 1 to disable metadata mode recording.

PS2: Disable metadata mode in timelapse mode too.

Change-Id: I422c49c0ace0c3a3e1f4459c7e4bf29e70af763a
Merge "libstagefright: support for disabling buffer metadata" into pac-4.4