[ALSA] adding __devinitdata to pci_device_id

Refering to <kernelsource>/Documentation/pci.txt
the struct pci_device_id can be released after loading the module.
Signed-off-by: Kenrik Kretzschmar <henne@nachtwindheim.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl

@@ -1172,7 +1172,7 @@
   }        
 
   /* PCI IDs */
-  static struct pci_device_id snd_mychip_ids[] = {
+  static struct pci_device_id snd_mychip_ids[] __devinitdata = {
           { PCI_VENDOR_ID_FOO, PCI_DEVICE_ID_BAR,
             PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, },
           ....
@@ -1565,7 +1565,7 @@
         <informalexample>
           <programlisting>
 <![CDATA[
-  static struct pci_device_id snd_mychip_ids[] = {
+  static struct pci_device_id snd_mychip_ids[] __devinitdata = {
           { PCI_VENDOR_ID_FOO, PCI_DEVICE_ID_BAR,
             PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, },
           ....