ALSA: virtuoso: add Xonar D1 support

Add support for the Asus Xonar D1.  It is the same as the DX, but
without the external power detection.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index 6f6d117..b117e42 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -1144,8 +1144,6 @@
 
     This module supports autoprobe and multiple cards.
 
-    Power management is _not_ supported.
-
   Module snd-ice1712
   ------------------
 
@@ -1628,8 +1626,6 @@
 
     This module supports autoprobe and multiple cards.
 
-    Power management is _not_ supported.
-
   Module snd-pcsp
   -----------------
 
@@ -2081,13 +2077,11 @@
   Module snd-virtuoso
   -------------------
 
-    Module for sound cards based on the Asus AV200 chip, i.e.,
-    Xonar D2 and Xonar D2X.
+    Module for sound cards based on the Asus AV100/AV200 chips,
+    i.e., Xonar D1, DX, D2 and D2X.
 
     This module supports autoprobe and multiple cards.
 
-    Power management is _not_ supported.
-
   Module snd-vx222
   ----------------