Merge commit 'cros/upstream~1' into 'cros/master'.

This cl fixes issues seen with autoconnect after suspend.

Contains the following commit:
b0c21263 broadband-modem: Disconnect bearers during disable (Pavan Holla)

BUG=b:170144157
TEST=powerd_dbus_suspend; press any key; check that cellular reconnects

Change-Id: I82a89c1892e71acadf1d75c74fd3058c410787b6