arm64: dts: qcom: sm8650: Drop redundant status from PMK8550 RTC

arm64: dts: qcom: sm8650: Drop redundant status from PMK8550 RTC

The PMK8550 RTC is always enabled in its DTSI file since
commit a791fc19965e ("arm64: dts: qcom: pmk8550: always enable RTC PMIC
device"), so drop redundant status=okay in SM8650 boards.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250908085331.56478-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>