Update telemetry_frsky.c

Correct Frsky Gps output format DDDMM.MMMM
Merge branch 'master' of github.com:Crashpilot1000/cleanflight into Crashpilot1000-master
Merge branch 'Crashpilot1000-master'
Refactor FrSky GPS coordinate to use a structure since the two arguments
are always used together.

This also improves code readability by replacing tmp1/tmp2 with a well
named variable.