samsungipcmodem: add gprs driver implementation
samsungipcmodem: add gprs-context driver implementation
samsungipcmodem: add radio-settings driver implementation
samsungipc: Add initial implementation of the Samsung IPC modem plugin
udev: add support for devices which are part of the misc kernel subsystem

Some modem kernel driver implementations are using the misc subsystem so we have to listen
for devices in this one too.
udev: add support for samsungipc based modems