[automerger] RESTRICT AUTOMERGE: WifiServiceImpl: fix and add tethering checks am: 38598d8d32 am: 8e4b6ba3c3 am: 5a9d8f6c08 am: 54035f7af6 skipped: 8a641322d9

Change-Id: I3d5496251e007b0b7ad39d458d166bcca00c3758
tree: 977c78b369abfb587d11c7e4ca61ae38fd5c4e6c
  1. libwifi_hal/
  2. libwifi_system/
  3. service/
  4. tests/
  5. PREUPLOAD.cfg