PCI: iproc: Do not use 0x in front of %pap

The "%pap" format adds a "0x" prefix, so using "0x%pap" results in output
of "0x0x...".  Drop the "0x" prefix in the format string.

[bhelgaas: changelog]
Signed-off-by: Dmitry V. Krivenok <krivenok.dmitry@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Ray Jui <rjui@broadcom.com>