arm64: dts: qcom: ipq9574: Update xo_board_clk to use fixed factor clock

xo_board_clk is fixed to 24 MHZ, which is routed from WiFi output clock
48 MHZ (also being the reference clock of CMN PLL) divided 2 by analog
block routing channel.

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Luo Jie <quic_luoj@quicinc.com>
Link: https://lore.kernel.org/r/20250103-qcom_ipq_cmnpll-v8-5-c89fb4d4849d@quicinc.com


Signed-off-by: Bjorn Andersson <andersson@kernel.org>