arm64: dts: qcom: sm8550: Correct the min/max voltages for vreg_l6n_3p3

arm64: dts: qcom: sm8550: Correct the min/max voltages for vreg_l6n_3p3

Voltage regulator 'vreg_l6n_3p3' max-microvolt prop is currently
configured at 3304000uV in different sm8550 board files. However this
is not a valid voltage value for 'pmic5_pldo502ln' type voltage
regulators.

Check below the max value(3200mV) in the regulator summary for min/max
used as 2800mV/3304mV in DT:-

logs:

[    0.294781] vreg_l6n_3p3: Setting 2800000-3304000uV

regulator summary:

regulator     use open bypass  opmode   voltage current  min     max
---------------------------------------------------------------------
..
vreg_l6n_3p3   0    0    0     normal   2800mV   0mA  2800mV  3200mV
..

Correct the min/max value to 3200000uV, as that is the closest valid
value to 3.3V and Hardware team has also confirmed that its good to
support the consumers(camera sensors) of this regulator.

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Kamal Wadhwa <kamal.wadhwa@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250620-sm8550-correct-vreg_l6n_3p3-vol-v2-1-b397f3e91d7b@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>