Use common node name 'mmc' to fix DTB_CHECK warning.
Add compatible string 'fsl,ls2080a-esdhc' for fsl-lx2160a.

arch/arm64/boot/dts/freescale/fsl-ls1012a-frdm.dtb: esdhc@1560000: $nodename:0: 'esdhc@1560000' does not match '^mmc(@.*)?$'
arch/arm64/boot/dts/freescale/fsl-ls1043a-qds.dtb: esdhc@1560000: $nodename:0: 'esdhc@1560000' does not match '^mmc(@.*)?$'
arch/arm64/boot/dts/freescale/fsl-ls1046a-frwy.dtb: esdhc@1560000: $nodename:0: 'esdhc@1560000' does not match '^mmc(@.*)?$'
arch/arm64/boot/dts/freescale/fsl-ls1088a-qds.dtb: esdhc@2140000: $nodename:0: 'esdhc@2140000' does not match '^mmc(@.*)?$'
arch/arm64/boot/dts/freescale/fsl-ls2080a-qds.dtb: esdhc@2140000: $nodename:0: 'esdhc@2140000' does not match '^mmc(@.*)?$'
arch/arm64/boot/dts/freescale/fsl-lx2160a-honeycomb.dtb: esdhc@2140000: compatible:0: 'fsl,esdhc' is not one of ['fsl,mpc8536-esdhc', 'fsl,mpc8378-esdhc', 'fsl,p2020-esdhc', 'fsl,p4080-esdhc', 'fsl,t1040-esdhc', 'fsl,t4240-esdhc', 'fsl,ls1012a-esdhc', 'fsl,ls1028a-esdhc', 'fsl,ls1088a-esdhc', 'fsl,ls1043a-esdhc', 'fsl,ls1046a-esdhc', 'fsl,ls2080a-esdhc']
        from schema $id: http://devicetree.org/schemas/mmc/fsl,esdhc.yaml#
arch/arm64/boot/dts/freescale/fsl-lx2160a-honeycomb.dtb: esdhc@2140000: $nodename:0: 'esdhc@2140000' does not match '^mmc(@.*)?$'
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>