ALSA: lx6464es - include mac address in device name

each device has a unique mac address, which can be used to distinguish
multiple devices in the same machine. we therefore include the full mac
address in the device shortname and the last 6 bytes in the device id.

Signed-off-by: Tim Blechmann <tim@klingt.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/lx6464es/lx6464es.h b/sound/pci/lx6464es/lx6464es.h
index aea621e..e2a124a 100644
--- a/sound/pci/lx6464es/lx6464es.h
+++ b/sound/pci/lx6464es/lx6464es.h
@@ -69,6 +69,8 @@
 	struct pci_dev         *pci;
 	int			irq;
 
+	u8			mac_address[6];
+
 	spinlock_t		lock;        /* interrupt spinlock */
 	struct mutex            setup_mutex; /* mutex used in hw_params, open
 					      * and close */