arm64: dts: qcom: msm8998: Use RPM XO

Feed GCC and SDHC_2 with the RPM XO instead of the fixed-clock one.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230110143642.986799-1-konrad.dybcio@linaro.org