arm64: dts: qcom: rename PM2250 to PM4125

It seems, the only actual mentions of PM2250 can be found are related to
the Qualcomm RB1 platform. However even RB1 schematics use PM4125 as a
PMIC name. Rename PM2250 to PM4125 to follow the documentation.

Note, this doesn't change the compatible strings. There was a previous
argument regarding renaming of compat strings.

Fixes: c309b9a5 ("arm64: dts: qcom: Add initial PM2250 device tree")
Acked-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20240128-pm2250-pm4125-rename-v2-2-d51987e9f83a@linaro.org


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