am db1bae9a: am 9bf39efb: Do not log AT command traffic by default.

Merge commit 'db1bae9a966150d7f6cc7d3e325cc8a4bf64b978'

* commit 'db1bae9a966150d7f6cc7d3e325cc8a4bf64b978':
  Do not log AT command traffic by default.