dt-bindings: arm: stm32: Add compatible strings for DH SoMs and boards

Document devicetree compatible strings of the DH SoMs and boards.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Patrice Chotard <patrice.chotard@st.com>
Cc: Patrick Delaunay <patrick.delaunay@st.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
To: linux-arm-kernel@lists.infradead.org
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>

Documentation/devicetree/bindings/arm/stm32/stm32.yaml

@@ -14,6 +14,20 @@ properties:
     const: "/"
   compatible:
     oneOf:
+      - description: DH STM32MP1 SoM based Boards
+        items:
+          - enum:
+              - arrow,stm32mp157a-avenger96 # Avenger96
+              - dh,stm32mp153c-dhcom-drc02
+              - dh,stm32mp157c-dhcom-pdk2
+              - dh,stm32mp157c-dhcom-picoitx
+          - enum:
+              - dh,stm32mp153c-dhcom-som
+              - dh,stm32mp157a-dhcor-som
+              - dh,stm32mp157c-dhcom-som
+          - enum:
+              - st,stm32mp153
+              - st,stm32mp157
       - items:
           - enum:
               - st,stm32f429i-disco
@@ -39,7 +53,6 @@ properties:
           - const: st,stm32h743
       - items:
           - enum:
-              - arrow,stm32mp157a-avenger96 # Avenger96
               - lxa,stm32mp157c-mc1
               - shiratech,stm32mp157a-iot-box # IoT Box
               - shiratech,stm32mp157a-stinger96 # Stinger96