modemmanager: swap plmn and technology set command in the proto

modemmanager: swap plmn and technology set command in the proto

In the current implementation of the modemmanager 'proto', if a 'plmn' and a
'technology' is configured, the 'plmn' is set first and then second the
'technology' on a 'proto' setup.

However, this is problematic if a 'technology' has already been set in an
earlier run. It is possible, that this previously set 'technology' is not
available at the current location, as the modem remembers the setting.

To fix this, first set the technology and then the plmn.

Signed-off-by: Florian Eckert <fe@dev.tdt.de>