ia64: remove CONFIG_PCI ifdefs

Now that hpsim support is gone, CONFIG_PCI is forced on for ia64, and
we can remove a few ifdefs for it.

Acked-by: Tom Vaden <tom.vaden@hpe.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lkml.kernel.org/r/20190813072514.23299-19-hch@lst.de


Signed-off-by: Tony Luck <tony.luck@intel.com>