Camera: Support obtaining camera memory from MemoryHeapIon

* Exynos 5 devices want the ION file descriptor from MemoryHeapIon

Change-Id: I9e445cf24c15713f713181667e7b7caa1a96592e
Include more Samsung decoders to set native color format

Change-Id: I6be1517083ebe958c2a2984f22b9e9fc6dce3c9f
stagefright: Adjust confidence threshold for extended sniffers

 * Some sniffers return 0.2 for cases where they only find an audio
   track in some containers.
 * Change the comparison to also examine files right on this threshold.
 * This allows us to score ONE FUCKING HUNDRED PERCENT on the Antutu
   Video Test \o/

Change-Id: I78b6ab8a634771e0e290f669801f5b08d6a32a51
Fix print format mismatches.

Clang complains about mismatch of argument type and print format.

Change-Id: Ib07da09d8b1b62b3018033f9eaf7aa01bf7f7f9c