Driver: snd-maestro3 - ESS Allegro Maestro3 audio device

File: ess/maestro3_assp_kernel.fw
File: ess/maestro3_assp_minisrc.fw

Licence: Unknown

Found in alsa-firmware package in hex form with a comment claiming to
be GPLv2+, but without source - and with another comment saying "ESS
drops binary dsp code images on our heads, but we don't get to see
specs on the dsp."

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