Gut rehab of pmw-jack-setup.
Gut rehab of pmw-jack-setup.

Query audio device for number of channels.

Shellcheck, delete dead code,

Param names: camelCase -> snake_case.

Signed-off-by: David Klann <dff1b5afc283254a22410fc5d58d2d0a8277fb86@linux.com>

opensourceradio/ram,opensourceradio/ram,opensourceradio/ram