sound: use DEFINE_PCI_DEVICE_TABLE

Use DEFINE_PCI_DEVICE_TABLE() to make PCI device ids go to
.devinit.rodata section, so they can be discarded in some cases,
and make them const.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/mixart/mixart.c b/sound/pci/mixart/mixart.c
index a83d196..7e8e7da 100644
--- a/sound/pci/mixart/mixart.c
+++ b/sound/pci/mixart/mixart.c
@@ -60,7 +60,7 @@
 /*
  */
 
-static struct pci_device_id snd_mixart_ids[] = {
+static DEFINE_PCI_DEVICE_TABLE(snd_mixart_ids) = {
 	{ PCI_VDEVICE(MOTOROLA, 0x0003), 0, }, /* MC8240 */
 	{ 0, }
 };