vmount: remove mavlink dependency
vmount: remove mavlink dependency

Let's just hardcode 0 because we don't want to include the mavlink
headers just for this.

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