PNP: make generic pnp_add_dma_resource()

Add a pnp_add_dma_resource() that can be used by all the PNP
backends.  This consolidates a little more pnp_resource_table
knowledge into one place.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/pnp/base.h b/drivers/pnp/base.h
index 3dd5d84..b6719b3 100644
--- a/drivers/pnp/base.h
+++ b/drivers/pnp/base.h
@@ -43,3 +43,5 @@
 
 struct pnp_resource *pnp_add_irq_resource(struct pnp_dev *dev, int irq,
 					  int flags);
+struct pnp_resource *pnp_add_dma_resource(struct pnp_dev *dev, int dma,
+					  int flags);