AR_PosControl: fix PSC_VEL_I param range #2953

Job	Run time
build (stm32f7, chibios, 10)	3m 45s
build (stm32h7, chibios, 10)	3m 16s
build (fmuv2-plane, chibios, 10)	1m 52s
build (periph-build, chibios, 10)	4m 51s
build (iofirmware, chibios, 10)	1m 25s
build (CubeOrange-bootloader, chibios, 10)	49s
build (fmuv3-bootloader, chibios, 10)	55s
build (revo-bootloader, chibios, 10)	51s
build (stm32h7-debug, chibios, 10)	2m 12s
build (fmuv3, chibios, 10)	4m 52s
build (revo-mini, chibios, 10)	3m 52s
build (MatekF405-Wing, chibios, 10)	4m 32s
build (CubeOrange-ODID, chibios, 10)	2m 31s
build (CubeRedPrimary-bootloader, chibios, 10)	56s
build (configure-all, chibios, 10)	8m 53s
build (build-options-defaults-test, chibios, 10)	5m 50s
build (signing, chibios, 10)	2m 41s
	54m 3s

Provide feedback