arm64: dts: qcom: eliza: Fix DSI1 phy reference clock rate

arm64: dts: qcom: eliza: Fix DSI1 phy reference clock rate

The DSI PHY CXO clock input is the SoC CXO divided by two.  DSI0 already
uses correct one, but DSI1 got copy-paste from SM8750, which had same
problem and copy-pasted code from SM8650.  Wrong clock parent will cause
incorrect DSI1 PHY PLL frequencies to be used making the DSI panel
non-working, although there is no upstream user of DSI1.

Fixes: 159d252ed800 ("arm64: dts: qcom: eliza: Add display (MDSS) with Display CC")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260713125837.727632-2-krzysztof.kozlowski@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>