[POWERPC] cell: Enable spider workarounds on all PCI buses

Don't limit spider I/O workarounds to the first two buses.
The IBM Cell blade has three of them (one PCI, two PCIe)
and we want to handle them all.

Signed-off-by: Jens Osterkamp <jens@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>

arch/powerpc/platforms/cell/io-workarounds.c

@@ -37,7 +37,7 @@
  */
 #define SPIDER_DISABLE_PREFETCH
 
-#define MAX_SPIDERS	2
+#define MAX_SPIDERS	3
 
 static struct spider_pci_bus {
 	void __iomem	*regs;