[POWERPC] Merge 32 and 64 bits asm-powerpc/io.h

powerpc: Merge 32 and 64 bits asm-powerpc/io.h

The rework on io.h done for the new hookable accessors made it easier,
so I just finished the work and merged 32 and 64 bits io.h for arch/powerpc.

arch/ppc still uses the old version in asm-ppc, there is just too much gunk
in there that I really can't be bothered trying to cleanup.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/include/asm-powerpc/machdep.h b/include/asm-powerpc/machdep.h
index 8c1a2df..1b04e57 100644
--- a/include/asm-powerpc/machdep.h
+++ b/include/asm-powerpc/machdep.h
@@ -88,9 +88,9 @@
 	void		(*pci_dma_dev_setup)(struct pci_dev *dev);
 	void		(*pci_dma_bus_setup)(struct pci_bus *bus);
 
-	void __iomem *	(*ioremap)(unsigned long addr, unsigned long size,
+	void __iomem *	(*ioremap)(phys_addr_t addr, unsigned long size,
 				   unsigned long flags);
-	void		(*iounmap)(void __iomem *token);
+	void		(*iounmap)(volatile void __iomem *token);
 #endif /* CONFIG_PPC64 */
 
 	int		(*probe)(void);