cameraHAL: removed dead codes completely
* storing metadata in buffers isnt supported
* remove all unused ifdefed codes
* remove unused dump functions
cameraHAL: increased the fps value from 30 to 31
* Increase the fps value from 30 to 31 as required by the camera stack to achieve 30 fps
cameraHAL: Increase the buffer count to get more frame rate
* requires more adsp memory but our adsp memory(1A) is already enough to handle it
cameraHAL: Use MM heap instead of SYSTEM heap for camera preview
* SYSTEM heap comes from kernel vmalloc and cameraHALs/drivers arent designed to use that heap
* Use the MM heap instead of