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/es1938.c b/sound/pci/es1938.c
index fb83e1f..553b752 100644
--- a/sound/pci/es1938.c
+++ b/sound/pci/es1938.c
@@ -243,7 +243,7 @@
 
 static irqreturn_t snd_es1938_interrupt(int irq, void *dev_id);
 
-static struct pci_device_id snd_es1938_ids[] = {
+static DEFINE_PCI_DEVICE_TABLE(snd_es1938_ids) = {
 	{ PCI_VDEVICE(ESS, 0x1969), 0, },   /* Solo-1 */
 	{ 0, }
 };