fsl-layerscape: Add workaround for PCIe erratum A010315

As the access to serders protocol unselected PCIe controller will
hang. So disable the R/W permission to unselected PCIe controller
including its CCSR, IO space and memory space according to the
serders protocol field of RCW.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>