drivers/net/: use DEFINE_PCI_DEVICE_TABLE()

Use DEFINE_PCI_DEVICE_TABLE() so we get place PCI ids table into correct section
in every case.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.h b/drivers/net/wireless/iwlwifi/iwl-3945.h
index 3ec2fe3..bc532ff 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945.h
+++ b/drivers/net/wireless/iwlwifi/iwl-3945.h
@@ -37,7 +37,7 @@
 #include <net/ieee80211_radiotap.h>
 
 /* Hardware specific file defines the PCI IDs table for that hardware module */
-extern struct pci_device_id iwl3945_hw_card_ids[];
+extern const struct pci_device_id iwl3945_hw_card_ids[];
 
 #include "iwl-csr.h"
 #include "iwl-prph.h"