alpha/PCI: factor out pcibios_setup()

The PCI core provides a generic pcibios_setup() routine.  Drop this
architecture-specific version in favor of that.
Acked-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Myron Stowe <myron.stowe@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

arch/alpha/kernel/pci.c

@@ -198,12 +198,6 @@ pcibios_init(void)
 
 subsys_initcall(pcibios_init);
 
-char * __devinit
-pcibios_setup(char *str)
-{
-	return str;
-}
-
 #ifdef ALPHA_RESTORE_SRM_SETUP
 static struct pdev_srm_saved_conf *srm_saved_configs;