arm64: dts: layerscape: change pcie interrupt order

arm64: dts: layerscape: change pcie interrupt order

Change pcie interrupt order to fix below warning.

arch/arm64/boot/dts/freescale/fsl-ls1012a-frdm.dtb: pcie@3400000: interrupt-names:0: 'pme' was expected
        from schema $id: http://devicetree.org/schemas/pci/fsl,layerscape-pcie.yaml#
arch/arm64/boot/dts/freescale/fsl-ls1012a-frdm.dtb: pcie@3400000: interrupt-names:1: 'aer' was expected
        from schema $id: http://devicetree.org/schemas/pci/fsl,layerscape-pcie.yaml#

Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>