arm64: dts: qcom: Update IPQ5018 xo_board_clk to use fixed factor clock

arm64: dts: qcom: Update IPQ5018 xo_board_clk to use fixed factor clock

The xo_board_clk is fixed to 24 MHZ, which is routed from WiFi output
clock 96 MHZ (also being the reference clock of CMN PLL) divided by 4
to the analog block routing channel. Update the xo_board_clk nodes in
the board DTS files to use clock-div/clock-mult accordingly.

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: George Moussalem <george.moussalem@outlook.com>
Link: https://lore.kernel.org/r/20250721-ipq5018-cmn-pll-v5-2-4cbf3479af65@outlook.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>