dt-bindings: clock: qcom,x1e80100-gcc: Add X1P42100

X1P42100 is based on X1E80100 and largely reuses the X1E80100's GCC
block, adding a couple wires here and there.

Add a compatible for the X1P4 with a fallback to X1E80100. There are
some additions in the smaller one, that will be added in the future.

Signed-off-by: Konrad Dybcio <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Bjorn Andersson <[email protected]>

Author: quic-kdybcio

Documentation/devicetree/bindings/clock/qcom,x1e80100-gcc.yaml

@@ -17,7 +17,11 @@ description: |
 
 properties:
   compatible:
-    const: qcom,x1e80100-gcc
+    oneOf:
+      - items:
+          - const: qcom,x1p42100-gcc
+          - const: qcom,x1e80100-gcc
+      - const: qcom,x1e80100-gcc
 
   clocks:
     items: