Add MAVLink receiver support, RADIO_RC_CHANNELS #34154

Job	Run time
build (stm32f7, chibios, 10)	1m 24s
build (stm32h7, chibios, 10)	1m 36s
build (fmuv2-plane, chibios, 10)	2m 3s
build (periph-build, chibios, 10)	1m 23s
build (iofirmware, chibios, 10)	1m 12s
build (CubeOrange-bootloader, chibios, 10)	1m 17s
build (fmuv3-bootloader, chibios, 10)	1m 4s
build (revo-bootloader, chibios, 10)	51s
build (stm32h7-debug, chibios, 10)	1m 26s
build (fmuv3, chibios, 10)	2m 25s
build (revo-mini, chibios, 10)	2m 56s
build (MatekF405-Wing, chibios, 10)	2m 45s
build (CubeOrange-ODID, chibios, 10)	1m 38s
build (CubeRedPrimary-bootloader, chibios, 10)	53s
build (configure-all, chibios, 10)	8m 28s
build (build-options-defaults-test, chibios, 10)	2m 19s
build (signing, chibios, 10)	1m 41s
	35m 21s

Provide feedback