px4_param.h: add ParamExtFloat & ParamExtInt (required by ekf2)
px4_param.h: add ParamExtFloat & ParamExtInt (required by ekf2)

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