board_common:Add support for simple hardware versioning
board_common:Add support for simple hardware versioning

   Define methods to get:
    1) The sub type of the hardware as a string.
    2) The version as an integer
    3) The revision as an integer

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