Modems which are using qmi do not reply on the 1st sync but they do
on subsequent. Sometimes uqmi is hanging - even when using an early
dummy access to unlock the modem. To always guarantee a proper
initialisation, running or hanging uqmi processes must be stopped
before. All uqmi calls have now a timeout option -t to avoid hanging.
Signed-off-by: Uwe Niethammer <uwe@dr-niethammer.de>
6b0db8592a