Makefile: Improve the error message if a target is not found The previous error message was misleading. The new more verbose error indicates that either the target does not exist or the ordering is wrong.
Makefile: Improve the error message if a target is not found
The previous error message was misleading. The new more verbose error indicates that either the target does not exist or the ordering is wrong.

krbeverx/Firmware,acfloria/Firmware,krbeverx/Firmware,krbeverx/Firmware,PX4/Firmware,krbeverx/Firmware,acfloria/Firmware,krbeverx/Firmware,PX4/Firmware,krbeverx/Firmware,acfloria/Firmware,acfloria/Firmware,PX4/Firmware,acfloria/Firmware,krbeverx/Firmware,PX4/Firmware,PX4/Firmware,acfloria/Firmware,PX4/Firmware,PX4/Firmware,acfloria/Firmware