Bounds correctness for AnalogIn_IIO #33304

Job	Run time
build-gcc-heli	2m 1s
build (base)	2m 0s
build (clang)	2m 17s
autotest-heli (sitltest-heli)	11m 4s
autotest (sitltest-copter-tests1a)	11m 48s
autotest (sitltest-copter-tests1b)	13m 13s
autotest (sitltest-copter-tests1c)	12m 38s
autotest (sitltest-copter-tests1d)	11m 29s
autotest (sitltest-copter-tests1e)	13m 21s
autotest (sitltest-copter-tests2a)	13m 47s
autotest (sitltest-copter-tests2b)	23m 57s
	1h 57m 35s

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