Merge "Add systrace tag for system property"

#define ATRACE_TAG_AIDL             (1<<24)

#define ATRACE_TAG_NNAPI            (1<<25)

#define ATRACE_TAG_RRO              (1<<26)

#define ATRACE_TAG_LAST             ATRACE_TAG_RRO

#define ATRACE_TAG_SYSPROP          (1<<27)

#define ATRACE_TAG_LAST             ATRACE_TAG_SYSPROP

// Reserved for initialization.

#define ATRACE_TAG_NOT_READY        (1ULL<<63)