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.org


Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>