arm64: dts: qcom: msm8939-samsung-a7: rename pwm node to conform to dtschema

Rename the pwm node from "pwm-vibrator" to "pwm" to conform to the dt schema.

Signed-off-by: Rayyan Ansari <rayyan.ansari@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20240716135339.87192-1-rayyan.ansari@linaro.org


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