Merge pull request #948 from facchinm/pdm_dsfdm_gain_fix #1167

Job	Run time
compile-examples (arduino:mbed:nano33ble)	7m 38s
compile-examples (arduino:mbed:envie_m7)	16m 34s
compile-examples (arduino:mbed:nanorp2040connect)	12m 56s
compile-examples (arduino:mbed:nicla_sense)	13m 36s
compile-examples (arduino:mbed:nicla_vision)	12m 12s
compile-examples (arduino:mbed:opta)	15m 52s
compile-examples (arduino:mbed:giga)	25m 11s
compile-examples (arduino:mbed:nicla_voice)	5m 21s
compile-examples (arduino:mbed:edge_control)	5m 38s
compile-examples (arduino:mbed:envie_m7:target_core=cm4, - libraries/KernelDebug - libraries/Port...	4m 29s
	1h 59m 27s

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