PCI: mips: use generic pci_swizzle_interrupt_pin()

Use the generic pci_swizzle_interrupt_pin() instead of arch-specific code.

Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
diff --git a/arch/mips/pci/pci.c b/arch/mips/pci/pci.c
index 62cae74..fa63dc2 100644
--- a/arch/mips/pci/pci.c
+++ b/arch/mips/pci/pci.c
@@ -149,19 +149,12 @@
 	       "Skipping PCI bus scan due to resource conflict\n");
 }
 
-/* Most MIPS systems have straight-forward swizzling needs.  */
-
-static inline u8 bridge_swizzle(u8 pin, u8 slot)
-{
-	return (((pin - 1) + slot) % 4) + 1;
-}
-
 static u8 __init common_swizzle(struct pci_dev *dev, u8 *pinp)
 {
 	u8 pin = *pinp;
 
 	while (dev->bus->parent) {
-		pin = bridge_swizzle(pin, PCI_SLOT(dev->devfn));
+		pin = pci_swizzle_interrupt_pin(dev, pin);
 		/* Move up the chain of bridges. */
 		dev = dev->bus->self;
         }