add support for the i.MX8MP based SoM and carrier from ABB.

Signed-off-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

---

Changes in v3:
added Reviewed-by from Krzysztof

Changes in v2:
reworked the compatible strings for ABB imx8mp based boards
called dtb checks, no errors for this patch

 Documentation/devicetree/bindings/arm/fsl.yaml | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/fsl.yaml b/Documentation/devicetree/bindings/arm/fsl.yaml
index b39a7e031177..b933788f756b 100644
--- a/Documentation/devicetree/bindings/arm/fsl.yaml
+++ b/Documentation/devicetree/bindings/arm/fsl.yaml
@@ -1090,6 +1090,15 @@ properties:
               - toradex,verdin-imx8mp-wifi  # Verdin iMX8M Plus Wi-Fi / BT Modules
           - const: fsl,imx8mp
 
+      - description: ABB Boards with i.MX8M Plus Modules from ADLink
+        items:
+          - enum:
+              - abb,imx8mp-aristanetos3-adpismarc # i.MX8MP ABB SoM on PI SMARC Board
+              - abb,imx8mp-aristanetos3-helios    # i.MX8MP ABB SoM on helios Board
+              - abb,imx8mp-aristanetos3-proton2s  # i.MX8MP ABB SoM on proton2s Board
+          - const: abb,imx8mp-aristanetos3-som    # i.MX8MP ABB SoM
+          - const: fsl,imx8mp
+
       - description: Avnet (MSC Branded) Boards with SM2S i.MX8M Plus Modules
         items:
           - const: avnet,sm2s-imx8mp-14N0600E-ep1 # SM2S-IMX8PLUS-14N0600E on SM2-MB-EP1 Carrier Board
-- 
2.20.1