Tools: skip check_submodules.sh when GIT_SUBMODULES_ARE_EVIL is set
Tools: skip check_submodules.sh when GIT_SUBMODULES_ARE_EVIL is set

this avoids using submodules when a specific NuttX tree is specified

acfloria/Firmware,darknight-007/Firmware,mcgill-robotics/Firmware,dagar/Firmware,PX4/Firmware,PX4/Firmware,krbeverx/Firmware,dagar/Firmware,krbeverx/Firmware,krbeverx/Firmware,mcgill-robotics/Firmware,Aerotenna/Firmware,jlecoeur/Firmware,acfloria/Firmware,PX4/Firmware,jlecoeur/Firmware,mcgill-robotics/Firmware,acfloria/Firmware,mje-nz/PX4-Firmware,krbeverx/Firmware,jlecoeur/Firmware,darknight-007/Firmware,Aerotenna/Firmware,dagar/Firmware,Aerotenna/Firmware,mje-nz/PX4-Firmware,jlecoeur/Firmware,PX4/Firmware,krbeverx/Firmware,Aerotenna/Firmware,mcgill-robotics/Firmware,mje-nz/PX4-Firmware,mcgill-robotics/Firmware,Aerotenna/Firmware,dagar/Firmware,Aerotenna/Firmware,jlecoeur/Firmware,jlecoeur/Firmware,PX4/Firmware,mje-nz/PX4-Firmware,acfloria/Firmware,acfloria/Firmware,mje-nz/PX4-Firmware,jlecoeur/Firmware,jlecoeur/Firmware,dagar/Firmware,acfloria/Firmware,PX4/Firmware,darknight-007/Firmware,PX4/Firmware,acfloria/Firmware,mje-nz/PX4-Firmware,darknight-007/Firmware,mcgill-robotics/Firmware,mje-nz/PX4-Firmware,krbeverx/Firmware,dagar/Firmware,darknight-007/Firmware,Aerotenna/Firmware,dagar/Firmware,mcgill-robotics/Firmware,krbeverx/Firmware