Merge remote-tracking branch 'cros/upstream' into 'cros/master'

Contains the following commits:
fd052c8e base-sim: don't allow sending PIN/PUK if not required (Aleksander Morgado)
9f192be6 iface-modem: allow loading current required lock info (Aleksander Morgado)
634bb1ca base-sim: avoid using 'self' to refer to the modem (Aleksander Morgado)
b6add181 iface-modem-simple: don't abort connection attempt if SIM-PUK2 locked (Aleksander Morgado)
94025aad base-sim: refactor common PIN/PUK unlock operations (Aleksander Morgado)
[...287 other commits...]
c523d5bd bearer-qmi: plug memleaks when connection attempt fails early (Aleksander Morgado)
260d34be bearer-qmi: plug memleaks during network disconnection (Aleksander Morgado)
7297b3fc mbim: release all allocated CIDs during shutdown (Amol Lad)
913f0d63 ci: require autoconf-archive (Aleksander Morgado)
8f4b5b52 sierra: add port hints for EM7565 modem (Amol Lad)

Cq-Depend: chromium:2063833
Change-Id: I62b8d9392c3da4f72da5076ceab272e75168d19f