Logs aux dump of status bar telephony broadcasts.

1. Adds auxillary dumpsys logging capabilities to NetworkControllerImpl
2. Adds logging statements when any broadcast is received

Test: Toggled airplane mode on and off. Ran dumpsys using `$ adb shell dumpsys activity service com.android.systemui/.dump.SystemUIAuxiliaryDumpService`, saw some logging statements
Bug: 234146317
Fixes: 234146317
Change-Id: I44f69a28911b61bd42d9c68a733ed17d8ca24de2