[rilmodem] fix CF to support all the service classes

Signed-off-by: Jarko Poutiainen <Jarko.Poutiainen@oss.tieto.com>
[rilmodem] remove comments regarding the BEARER_CLASS_DEFAULT

Signed-off-by: Jarko Poutiainen <Jarko.Poutiainen@oss.tieto.com>
[rilmodem] define SERVICE_CLASS_NONE

Signed-off-by: Jarko Poutiainen <Jarko.Poutiainen@oss.tieto.com>
[rilmodem] use SERVICE_CLASS_NONE insteead of hard coded value

Signed-off-by: Jarko Poutiainen <Jarko.Poutiainen@oss.tieto.com>
[rilmodem] Force GSM WCDMA configuration in very first start

There was a bug in previous solution where GSM WCDMA was set
only if previous configuration was defined. This fix forces
the GSM WCDMA configuration always if configured.

Signed-off-by: Jussi Kangas <jussi.kangas@oss.tieto.com>
Merge pull request #151 from jkangas/master

Request for pulling LTE configuration bug fix to main branch
Merge pull request #150 from jpoutiai/master

[rilmodem] fix CF to support all the service classes