powerpc: Move iSeries_pci.c to powerpc/platform/iseries

and rename it to pci.c.  This also required moving
arch/ppc64/kernel/pci.h into include/asm-powerpc (called
ppc-pci.h.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
diff --git a/arch/ppc64/kernel/pci_iommu.c b/arch/ppc64/kernel/pci_iommu.c
index 14647e0..19362ea 100644
--- a/arch/ppc64/kernel/pci_iommu.c
+++ b/arch/ppc64/kernel/pci_iommu.c
@@ -37,7 +37,7 @@
 #include <asm/iommu.h>
 #include <asm/pci-bridge.h>
 #include <asm/machdep.h>
-#include "pci.h"
+#include <asm/ppc-pci.h>
 
 #ifdef CONFIG_PPC_ISERIES
 #include <asm/iSeries/iSeries_pci.h>