PCI: layerscape: Call dw_pcie_setup_rc() from ls_pcie_host_init()

We called dw_pcie_setup_rc() from the ls1021a host init function, but not
from the common ls_pcie_host_init() function, so platforms other than
ls1021a still depended on initialization by the bootloader.

Call dw_pcie_setup_rc() from ls_pcie_host_init() to reduce dependencies on
the bootloader.
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Roy Zang <tie-fei.zang@freescale.com>

drivers/pci/dwc/pci-layerscape.c

@@ -165,6 +165,8 @@ static int ls_pcie_host_init(struct pcie_port *pp)
 	ls_pcie_drop_msg_tlp(pcie);
 	iowrite32(0, pci->dbi_base + PCIE_DBI_RO_WR_EN);
 
+	dw_pcie_setup_rc(pp);
+
 	return 0;
 }