PCI: layerscape: Remove unused fields from struct ls_pcie

Removed unused node, dev, and bus fields from struct ls_pcie.

[bhelgaas: split into separate patch]
Signed-off-by: NMinghuan Lian <Minghuan.Lian@freescale.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

drivers/pci/host/pci-layerscape.c

@@ -39,9 +39,6 @@ struct ls_pcie_drvdata {
 };
 
 struct ls_pcie {
-	struct list_head node;
-	struct device *dev;
-	struct pci_bus *bus;
 	void __iomem *dbi;
 	struct regmap *scfg;
 	struct pcie_port pp;