specialix: fix compiler warning on specialix_pci_tbl

Annotate specialx_pci_tbl as '__used' to fix following warning:

  CC      drivers/char/specialix.o
drivers/char/specialix.c:2358: warning: ‘specialx_pci_tbl’ defined but not used
Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Cc: Roger Wolff <R.E.Wolff@BitWizard.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/char/specialix.c

@@ -2356,7 +2356,7 @@ static void __exit specialix_exit_module(void)
 	func_exit();
 }
 
-static struct pci_device_id specialx_pci_tbl[] __devinitdata = {
+static struct pci_device_id specialx_pci_tbl[] __devinitdata __used = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_IO8) },
 	{ }
 };