PCI: layerscape: Update PCI config space remap function

PCI configuration space should be mapped with a memory region type that
generates on the CPU host bus non-posted write transations. Update the
driver to use the devm_pci_remap_cfg* interface to make sure the correct
memory mappings for PCI configuration space are used.

Signed-off-by: Lorenzo Pieralisi <[email protected]>
Signed-off-by: Bjorn Helgaas <[email protected]>
Cc: Mingkai Hu <[email protected]>
Cc: Minghuan Lian <[email protected]>
Cc: Roy Zang <[email protected]>

drivers/pci/dwc/pci-layerscape.c

@@ -283,7 +283,7 @@ static int __init ls_pcie_probe(struct platform_device *pdev)
 	pcie->pci = pci;
 
 	dbi_base = platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs");
-	pci->dbi_base = devm_ioremap_resource(dev, dbi_base);
+	pci->dbi_base = devm_pci_remap_cfg_resource(dev, dbi_base);
 	if (IS_ERR(pci->dbi_base))
 		return PTR_ERR(pci->dbi_base);