of: Export of_pci_range_to_resource()

Some PCIe host drivers parse of_pci_range from device tree and convert
it to resources. Export of_pci_range_to_resource() to allow PCIe host
drivers to be compiled as loadable kernel module.
Signed-off-by: NManikanta Maddireddy <mmaddireddy@nvidia.com>
[lorenzo.pieralisi@arm.com: rewrote commit log]
Signed-off-by: NLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: NRob Herring <robh@kernel.org>

drivers/of/address.c

@@ -361,6 +361,7 @@ int of_pci_range_to_resource(struct of_pci_range *range,
 	res->end = (resource_size_t)OF_BAD_ADDR;
 	return err;
 }
+EXPORT_SYMBOL(of_pci_range_to_resource);
 #endif /* CONFIG_PCI */
 
 /*