dt-bindings: mmc: add DT bindings for ls1028a eSDHC host controller

Add "fsl,ls1028a-esdhc" bindings for ls1028a eSDHC host controller
Signed-off-by: Yinbo Zhu <yinbo.zhu@nxp.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Documentation/devicetree/bindings/mmc/fsl-esdhc.txt

@@ -17,6 +17,7 @@ Required properties:
 	"fsl,t4240-esdhc"
     Possible compatibles for ARM:
 	"fsl,ls1012a-esdhc"
+	"fsl,ls1028a-esdhc"
 	"fsl,ls1088a-esdhc"
 	"fsl,ls1043a-esdhc"
 	"fsl,ls1046a-esdhc"