arm64: dts: qcom: sm8550: fix xo clock source in cpufreq-hw node

Currently, available frequencies for all CPUs are appearing as 2x
of the actual frequencies. Use xo clock source as bi_tcxo in the
cpufreq-hw node to fix this.
Signed-off-by: Pavankumar Kondeti <quic_pkondeti@quicinc.com>
Tested-by: Abel Vesa <abel.vesa@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230117093533.3710000-1-quic_pkondeti@quicinc.com

arch/arm64/boot/dts/qcom/sm8550.dtsi

@@ -2589,7 +2589,7 @@ cpufreq_hw: cpufreq@17d91000 {
 			      <0 0x17d92000 0 0x1000>,
 			      <0 0x17d93000 0 0x1000>;
 			reg-names = "freq-domain0", "freq-domain1", "freq-domain2";
-			clocks = <&rpmhcc RPMH_CXO_CLK>, <&gcc GCC_GPLL0>;
+			clocks = <&bi_tcxo_div2>, <&gcc GCC_GPLL0>;
 			clock-names = "xo", "alternate";
 			interrupts = <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>,
 				     <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>,