Clarify setpoint priority #1687

Job	Run time
read_targets_from_file / read_targets_from_file	7s
basic_build (cf2)	4m 59s
basic_build (bolt)	4m 57s
basic_build (tag)	4m 59s
basic_build (flapper)	5m 5s
kbuild-targets (allyesconfig)	5m 7s
kbuild-targets (allnoconfig)	4m 41s
features (bosch.conf)	5m 1s
kbuild-targets (randconfig)	4m 31s
apps (examples/app_hello_world)	3m 44s
features (loco_tdma.conf)	5m 47s
apps (examples/app_hello_world-cpp)	3m 44s
features (loco_tdoa2.conf)	5m 51s
apps (examples/app_hello_file_tree)	4m 7s
features (loco_tdoa3.conf)	6m 0s
apps (examples/app_peer_to_peer)	4m 29s
features (loco_tdoa3_all.conf)	4m 59s
apps (examples/app_p2p_DTR)	3m 55s
apps (examples/app_stm_gap8_cpx)	3m 51s
features (bigquad.conf)	5m 59s
features (app_api.conf)	4m 51s
apps (examples/demos/app_push_demo)	3m 42s
apps (examples/demos/swarm_demo)	4m 33s
apps (examples/demos/app_wall_following_demo)	4m 43s
	1h 49m 42s

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