PCI: spear: Pass config resource through reg property

PCIe configuration space should be passed through reg property, rather than
through ranges property.  This patch does the correction for SPEAr13XX
SOCs.

Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Mohit Kumar <mohit.kumar@st.com>
diff --git a/drivers/pci/host/pcie-spear13xx.c b/drivers/pci/host/pcie-spear13xx.c
index 6dea9e4..85f594e 100644
--- a/drivers/pci/host/pcie-spear13xx.c
+++ b/drivers/pci/host/pcie-spear13xx.c
@@ -340,7 +340,7 @@
 
 	pp->dev = dev;
 
-	dbi_base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	dbi_base = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dbi");
 	pp->dbi_base = devm_ioremap_resource(dev, dbi_base);
 	if (IS_ERR(pp->dbi_base)) {
 		dev_err(dev, "couldn't remap dbi base %p\n", dbi_base);