dt-bindings: soc: google: exynos-sysreg: add dedicated hsi2 sysreg compatible

Update dt schema to include the gs101 hsi2 sysreg compatible.
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Reviewed-by: André Draszik <andre.draszik@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20240429111537.2369227-2-peter.griffin@linaro.orgSigned-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Documentation/devicetree/bindings/soc/samsung/samsung,exynos-sysreg.yaml

@@ -15,6 +15,7 @@ properties:
       - items:
           - enum:
               - google,gs101-apm-sysreg
+              - google,gs101-hsi2-sysreg
               - google,gs101-peric0-sysreg
               - google,gs101-peric1-sysreg
               - samsung,exynos3-sysreg
@@ -72,6 +73,7 @@ allOf:
         compatible:
           contains:
             enum:
+              - google,gs101-hsi2-sysreg
               - google,gs101-peric0-sysreg
               - google,gs101-peric1-sysreg
               - samsung,exynos850-cmgp-sysreg