ALSA: hda - add device entry and inactive flag to unsolicited response

This patch adds two fields to unsolicited response, according to spec HDA040-A:
- Device Entry (bit 20:15)
- Inactive (bit 2)
and show the info in debug message.

Signed-off-by: Mengdong Lin <mengdong.lin@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>