gps: fix faking so that ekf2 initializes
gps: fix faking so that ekf2 initializes

This changes the faked GPS values in order to get ekf2 to initialize.

jlecoeur/Firmware,Aerotenna/Firmware,krbeverx/Firmware,PX4/Firmware,jlecoeur/Firmware,krbeverx/Firmware,dagar/Firmware,Aerotenna/Firmware,PX4/Firmware,acfloria/Firmware,Aerotenna/Firmware,acfloria/Firmware,mje-nz/PX4-Firmware,dagar/Firmware,acfloria/Firmware,dagar/Firmware,jlecoeur/Firmware,PX4/Firmware,mcgill-robotics/Firmware,dagar/Firmware,krbeverx/Firmware,jlecoeur/Firmware,PX4/Firmware,krbeverx/Firmware,dagar/Firmware,Aerotenna/Firmware,mje-nz/PX4-Firmware,krbeverx/Firmware,Aerotenna/Firmware,mje-nz/PX4-Firmware,PX4/Firmware,mcgill-robotics/Firmware,acfloria/Firmware,PX4/Firmware,Aerotenna/Firmware,acfloria/Firmware,krbeverx/Firmware,mcgill-robotics/Firmware,mcgill-robotics/Firmware,mcgill-robotics/Firmware,Aerotenna/Firmware,mje-nz/PX4-Firmware,mje-nz/PX4-Firmware,dagar/Firmware,mcgill-robotics/Firmware,mje-nz/PX4-Firmware,krbeverx/Firmware,mje-nz/PX4-Firmware,jlecoeur/Firmware,acfloria/Firmware,mcgill-robotics/Firmware,jlecoeur/Firmware,jlecoeur/Firmware,acfloria/Firmware,jlecoeur/Firmware,PX4/Firmware,dagar/Firmware