PCI: imx6: Rename imx6_pcie_start_link() to imx6_pcie_establish_link()

Rename imx6_pcie_start_link() to imx6_pcie_establish_link() to follow the
convention of other DesignWare-based host drivers. No functional change.

Signed-off-by: Bjorn Helgaas <[e-mail]>
Acked-by: Pratyush Anand <[e-mail]>

drivers/pci/host/pci-imx6.c

···
 	return dw_handle_msi_irq(pp);
 }
 
-static int imx6_pcie_start_link(struct pcie_port *pp)
+static int imx6_pcie_establish_link(struct pcie_port *pp)
 {
 	struct imx6_pcie *imx6_pcie = to_imx6_pcie(pp);
 	uint32_t tmp;
···
 
 	dw_pcie_setup_rc(pp);
 
-	imx6_pcie_start_link(pp);
+	imx6_pcie_establish_link(pp);
 
 	if (IS_ENABLED(CONFIG_PCI_MSI))
 		dw_pcie_msi_init(pp);