[ALSA] Add PCXHR driver

Modules: Documentation,PCI drivers,Digigram PCXHR driver

Add Digigram PCXHR driver.

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 c30fd30..d257801 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -1103,6 +1103,13 @@
 
     This module supports only one card, autoprobe and PnP.
 
+  Module snd-pcxhr
+  ----------------
+
+    Module for Digigram PCXHR boards
+
+    This module supports multiple cards.
+
   Module snd-powermac (on ppc only)
   ---------------------------------