PNP: add detail to debug resource dump

In the debug resource dump, decode the flags and indicate when
a resource is disabled or has been automatically assigned.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>