cutils: add adb trace tag. am: e2d97326 am: 49d9efe7

#define ATRACE_TAG_SYSTEM_SERVER    (1<<19)

#define ATRACE_TAG_DATABASE         (1<<20)

#define ATRACE_TAG_NETWORK          (1<<21)

#define ATRACE_TAG_LAST             ATRACE_TAG_NETWORK

#define ATRACE_TAG_ADB              (1<<22)

#define ATRACE_TAG_LAST             ATRACE_TAG_ADB

// Reserved for initialization.

#define ATRACE_TAG_NOT_READY        (1ULL<<63)