[PATCH] arm64: Define HAVE_ARCH_PIO_SIZE and related symbols.

[Will Deacon]

On Mon, Jul 13, 2015 at 10:31:36PM +0100, David Daney wrote:
> From: David Daney <david.daney at cavium.com>
> 
> Needed to make pci_iomap() work.

Care to elaborate?

AFAICT, mapping an IO bar on arm64 just gives you back a VA into our
PCI_IOBASE region and the ioreadX accessors will just call the readX
macros, so there should be no need for further port adjustment.

Will