ath5k: Fix modinfo does not list alias -> pci-id lines

The AHB bus support patchset moved the table "Known PCI ids" from base.c
to pci.c - unfortunately, MODULE_DEVICE_TABLE() was not transferred.
With this fix 'modinfo ath5k' lists the alias -> pci-id lines, again.

The issue was introduced by:
   commit e5b046d8
   "ath5k: Move PCI bus functions to separate file."
Signed-off-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath5k/pci.c

@@ -45,6 +45,7 @@ static DEFINE_PCI_DEVICE_TABLE(ath5k_pci_id_table) = {
 	{ PCI_VDEVICE(ATHEROS, 0x001d) }, /* 2417 Nala */
 	{ 0 }
 };
+MODULE_DEVICE_TABLE(pci, ath5k_pci_id_table);
 
 /* return bus cachesize in 4B word units */
 static void ath5k_pci_read_cachesize(struct ath_common *common, int *csz)