liblog: move LOG_ID_DEFAULT into the log_id enum

As requested during the API review.

Bug: 150898477
Test: liblog and libbase unit tests
Merged-In: Id67203bbfbc3e116b6b6efd40428afe48203dcfc
Change-Id: Id67203bbfbc3e116b6b6efd40428afe48203dcfc
(cherry picked from commit 6085cd5a645f95dca9fd80ca8df9dc0c26cf5969)
1 file changed