This patch just cleans up arch/ppc64/kernel/pci_dn.c a bit, including:
	- remove it from the iSeries build completely
	- small changes to Makefile
	- remove the "post" parameter from traverse_pci_devices as
	  noone used it
	- make traverse_all_pci_devices static
	- remove CONFIG_PPC_PSERIES tests as we no longer build for iSeries
	- some reformatting (closer to "standard")
	- remove some of pointer casts

This has been built (with default config) on pSeries and pmac and built and
run on iSeries.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>