soc: qcom: rpmh-rsc: Add RSC version 4 support

soc: qcom: rpmh-rsc: Add RSC version 4 support

Register offsets for v3 and v4 versions are backward compatible. Assign v3
offsets for v4 and all higher versions to avoid end up using v2 offsets.

Signed-off-by: Maulik Shah <maulik.shah@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20250623-rsc_v4-v1-1-275b27bc5e3c@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>