QCamera: Interface cleanup

- All size member variables changed to size_t.
  Others changed to named size types, e.g
  int changed to int32_t, etc.
- Moved macro CAM_DUMP_TO_FILE to
  'mm_camera_interface.h'.
- Removed irrelevant macro FLIP_V_H

CRs-Fixed: 641033
Change-Id: I81ab0766f8edf37938b1d167768782b27f75b3a6
23 files changed