ucm2 profile for Behringer Flow8

ucm2 profile for Behringer Flow8

- kudos to Pekka Oinas for supporting me finding the right settings
- provides an UCM2 profile for Behringer's digital mixer Flow
  configured into "streaming" mode
- 2 stereo outputs, 1 stereo input

- second UCM2 profile for Behringer Flow8 recording mode
- 10 channel input, 4 channel out
- MIC1-4, Line-56, Line-78, Master/Monitor

Fixes: https://github.com/alsa-project/alsa-ucm-conf/pull/160
Signed-off-by: Sebastian Mangelsen (sebman) <sebastian.mangelsen@benify.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>