module-hal-detect fails to handle 5.1 sound card with default-sample-channels=6

[atrus]

Setting up a 5.1 usb sound card with pulseaudio. In order to get it to do 5.1, default-sample-channnels is set to 6 in daemon.conf.

Configuring the card with:

load-module module-alsa-sink sink_name=usb_out device=surround51:1 channels=6

Results in a 6channel device visible in paman. However, allowing module-hal-detect to catch the card still produces a 2 channel device in paman, regardless of the default-sample-channels setting.

Attached are logs from pulseaudio -vv under the manual and hal configurations, respectively.

[atrus]

pulseaudio -vv undor manual configuration

[tanuk]

Same as #235.