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/ad1889.c b/sound/pci/ad1889.c
index 8f5098f..4382d0f 100644
--- a/sound/pci/ad1889.c
+++ b/sound/pci/ad1889.c
@@ -1048,7 +1048,7 @@
 	pci_set_drvdata(pci, NULL);
 }
 
-static struct pci_device_id snd_ad1889_ids[] = {
+static DEFINE_PCI_DEVICE_TABLE(snd_ad1889_ids) = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_ANALOG_DEVICES, PCI_DEVICE_ID_AD1889JS) },
 	{ 0, },
 };