[FSO] add QCT msm7* modem support

[Michael 'Mickey' Lauer]

I have created a new modem type called qualcomm_msm (yes I know you find it 
too broad, but I'd rather start broad and then specify, if necessary -- not 
vice versa).

Please check whether this works for you. To test, set:

[ogsmd]
modemtype=qualcomm_msm

The real work for you starts now. You need to add support for the non-standard 
unsolicited messages (start with the signal quality thingy) and perhaps 
non-standard commands and responses. Please see all the examples for how to 
do that.

Good speed!

Mickey.