Add debug to TelephonyRegistry.

Also change all debug to use the new log method and send the debug
to Rlog rather than Slog. This way we don't spam the main log buffer
just our radio log buffer while we're debugging 16148026.

Bug: 16148026
Change-Id: I5571f7d07405ddb3c208efd1756106b78343c843
1 file changed