ucm2 profile for Behringer Flow8

[GitHub pull_request - edited]

alsa-project/alsa-ucm-conf pull request #160 was edited from smangels:

- kudos to Pekka Oinas for supporting me finding the right settings
- provides an UCM2 profile for Behringer's digital mixer Flow8
  configured into "streaming" mode
- 2 stereo outputs, 1 stereo input, when vendor ID product ID are `1397:050d`
- prepare filenames for Flow8's recording mode `1397:050c` (10 chan input, 4 chan output)

Request URL   : https://github.com/alsa-project/alsa-ucm-conf/pull/160
Patch URL     : https://github.com/alsa-project/alsa-ucm-conf/pull/160.patch
Repository URL: https://github.com/alsa-project/alsa-ucm-conf