dt-bindings: i2c: imx: add SoC specific compatible strings for layerscape

Add chip specific compatible strings for layerscape platforms to make it
possible to do SoC specific fix-ups in the driver.
Signed-off-by: Li Yang <leoyang.li@nxp.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

Documentation/devicetree/bindings/i2c/i2c-imx.yaml

@@ -18,6 +18,17 @@ properties:
       - const: fsl,imx1-i2c
       - const: fsl,imx21-i2c
       - const: fsl,vf610-i2c
+      - items:
+          - enum:
+              - fsl,ls1012a-i2c
+              - fsl,ls1021a-i2c
+              - fsl,ls1028a-i2c
+              - fsl,ls1043a-i2c
+              - fsl,ls1046a-i2c
+              - fsl,ls1088a-i2c
+              - fsl,ls208xa-i2c
+              - fsl,lx2160a-i2c
+          - const: fsl,vf610-i2c
       - items:
           - const: fsl,imx35-i2c
           - const: fsl,imx1-i2c