arm64: dts: qcom: msm8996 switch from RPM_SMD_BB_CLK1 to RPM_SMD_XO_CLK_SRC

arm64: dts: qcom: msm8996 switch from RPM_SMD_BB_CLK1 to RPM_SMD_XO_CLK_SRC

The vendor kernel uses RPM_SMD_XO_CLK_SRC clock as an CXO clock rather
than using the RPM_SMD_BB_CLK1 directly. Follow this example and switch
msm8996.dtsi to use RPM_SMD_XO_CLK_SRC clock instead of RPM_SMB_BB_CLK1.

Fixes: 2b8c9c77c268 ("arm64: dts: qcom: msm8996: convert xo_board to RPM_SMD_BB_CLK1")
Suggested-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230120061417.2623751-7-dmitry.baryshkov@linaro.org