Added waypoint/loiter time
Merge branch 'os_dev' of https://github.com/moon-bear/firmware into add_OS_for_test
Deleted temporary uptime counter variable
Added get_elasped_time, fixed user config define,
Added navigation_task
Clean system_time compile warning
Fixed device define bug, navigation task working, moved dma_push to navigation
time system installed to navigation.c
Moved flight_control_task to a separated file
Merge branch 'add_OS_for_test' of https://github.com/ming6842/firmware into ming6842-add_OS_for_test

Conflicts:
	program/main.c
Merge branch 'ming6842-add_OS_for_test' into os_dev