pci: layerscape: move pci node search in a common function

Fix duplication of this code by placing it in a common function.
Furthermore, the resulting function will be re-used in upcoming
patches.

Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
1 file changed