Check for `modem` SOUND_CLASS
Make sure the modem gets the right property so we don't have to validate this by hand.
Prompted by librem5-base!277 (merged)
We can check properties for other devices as well with this pattern in the future.
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Make sure the modem gets the right property so we don't have to validate this by hand.
Prompted by librem5-base!277 (merged)
We can check properties for other devices as well with this pattern in the future.