[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/sound/pci/Makefile b/sound/pci/Makefile
index 82a9c73..a6c3cd5 100644
--- a/sound/pci/Makefile
+++ b/sound/pci/Makefile
@@ -61,6 +61,7 @@
 	korg1212/ \
 	mixart/ \
 	nm256/ \
+	pcxhr/ \
 	rme9652/ \
 	trident/ \
 	ymfpci/ \