[PARISC] Fix ccio_request_resource when CONFIG_IOMMU_CCIO is not defined

This patch fixes the ccio_request_resource to work properly when
the CONFIG_IOMMU_CCIO is not defined.  This patch was tested on
my E35.

Signed-off-by: Ryan Bradetich <rbrad@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>