AP_Mount: Siyi sends min max temp as named floats #3502

Job	Run time
build (stm32f7, chibios, 10)	14m 55s
build (stm32h7, chibios, 10)	13m 40s
build (fmuv2-plane, chibios, 10)	7m 30s
build (periph-build, chibios, 10)	13m 51s
build (iofirmware, chibios, 10)	4m 21s
build (CubeOrange-bootloader, chibios, 10)	3m 12s
build (fmuv3-bootloader, chibios, 10)	3m 13s
build (revo-bootloader, chibios, 10)	3m 30s
build (stm32h7-debug, chibios, 10)	9m 4s
build (fmuv3, chibios, 10)	15m 3s
build (revo-mini, chibios, 10)	11m 48s
build (MatekF405-Wing, chibios, 10)	12m 55s
build (CubeOrange-ODID, chibios, 10)	9m 54s
build (CubeRedPrimary-bootloader, chibios, 10)	3m 31s
build (configure-all, chibios, 10)	12m 34s
build (build-options-defaults-test, chibios, 10)	24m 16s
build (signing, chibios, 10)	11m 0s
build (CubeOrange-PPP, chibios, 10)	8m 14s
build (CubeRed-EKF2, chibios, 10)	8m 41s
build (SOHW, chibios, 10)	14m 0s
build (Pixhawk6X-PPPGW, chibios, 10)	4m 50s
build (new-check, chibios, 10)	14m 33s
	3h 44m 35s

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