arm64: dts: qcom: sm8250: Fix CPU7 opp table

arm64: dts: qcom: sm8250: Fix CPU7 opp table

There is a typo in cpu7_opp9. Fix it to get rid of the following
errors.

[    0.198043] cpu cpu7: Voltage update failed freq=1747200
[    0.198052] cpu cpu7: failed to update OPP for freq=1747200

Fixes: 8e0e8016cb79 ("arm64: dts: qcom: sm8250: Add CPU opp tables")
Signed-off-by: Xilin Wu <wuxilin123@gmail.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250308-fix-sm8250-cpufreq-v1-1-8a0226721399@gmail.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>