Add camera as an ATRACE tag

#define ATRACE_TAG_SYNC_MANAGER     (1<<7)

#define ATRACE_TAG_AUDIO            (1<<8)

#define ATRACE_TAG_VIDEO            (1<<9)

#define ATRACE_TAG_LAST             ATRACE_TAG_VIDEO

#define ATRACE_TAG_CAMERA           (1<<10)

#define ATRACE_TAG_LAST             ATRACE_TAG_CAMERA

#define ATRACE_TAG_VALID_MASK ((ATRACE_TAG_LAST - 1) | ATRACE_TAG_LAST)