[online PATCH 0/9] implement Online properties

Hi all, Here are online implementation for a few more modem drivers. All of them might not make sense (if the modem does not support AT+CFUN=4, for instance). I have not tested these patches with more exotic hardware. There might be some common caveats. E.g., if the modem does to wake up with AT+CFUN=4, it might work with an initial cfun command like "AT+CFUN=1 ; +CFUN=4". At least Calypso requires such an initialization command. --Pekka