mc_pos_control: handle takeoff and landing thrust limit the same way
mc_pos_control: handle takeoff and landing thrust limit the same way

The landing thrust limit was after the position controller and
could be inconsistent with what the takeoff limit did. This
resulted in different thrust values sequentially getting applied
during landing.

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