Copter: support for making use of heading error correction selectable #934

Job	Run time
build (stm32f7, chibios, 10)	3m 42s
build (stm32h7, chibios, 10)	3m 19s
build (fmuv2-plane, chibios, 10)	1m 49s
build (periph-build, chibios, 10)	3m 56s
build (iofirmware, chibios, 10)	1m 31s
build (CubeOrange-bootloader, chibios, 10)	52s
build (fmuv3-bootloader, chibios, 10)	1m 5s
build (revo-bootloader, chibios, 10)	47s
build (stm32h7-debug, chibios, 10)	2m 21s
build (fmuv3, chibios, 10)	5m 40s
build (revo-mini, chibios, 10)	4m 5s
build (MatekF405-Wing, chibios, 10)	4m 35s
build (CubeOrange-ODID, chibios, 10)	2m 46s
build (CubeRedPrimary-bootloader, chibios, 10)	1m 3s
build (configure-all, chibios, 10)	10m 42s
build (build-options-defaults-test, chibios, 10)	7m 2s
build (signing, chibios, 10)	2m 31s
build (CubeOrange-PPP, chibios, 10)	2m 0s
build (CubeRed-EKF2, chibios, 10)	1m 55s
build (SOHW, chibios, 10)	3m 12s
build (Pixhawk6X-PPPGW, chibios, 10)	1m 24s
build (new-check, chibios, 10)	4m 10s
	1h 10m 27s

Provide feedback