mbm: don't flash serial ports on disconnect (bgo #650740)

The F5521gw resets various port properties like echo when the port
is flashed, which was happening on disconnect.  Since MM had already
turned of echo with ATE0, and the AT parser in-use expected no
echo, this confused MM when the port magically started echoing commands
back.  We don't need flashing on the Ericsson devices because there
will always be a free AT port even if PPP is used for a secondary
PDP context, so we can just skip flashing entirely for these
devices.

0 files changed, 0 insertions, 0 deletions