jack: implement pcm operation sw_params

[GitHub pull_request - edited]

alsa-project/alsa-plugins pull request #43 was edited from aditpape:

Alsa-lib commit #88e4ae27 introduced a dynamic recalculation of the avail_min
value on the underlaying slave devices.
This updated avail_min value is not reaching the alsa-jack plugin due to lack
of the sw_params operation.
This patch adds this missing operation to correctly apply an updated avail_min
setting during runtime.

Signed-off-by: Andreas Pape <apape at de.adit-jv.com>

Request URL   : https://github.com/alsa-project/alsa-plugins/pull/43
Patch URL     : https://github.com/alsa-project/alsa-plugins/pull/43.patch
Repository URL: https://github.com/alsa-project/alsa-plugins