regulator: wm8350: Add missing min_uV and uV_step settings for DCDC4

Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

drivers/regulator/wm8350-regulator.c

@@ -1105,6 +1105,8 @@ static const struct regulator_desc wm8350_reg[NUM_WM8350_REGULATORS] = {
 		.irq = WM8350_IRQ_UV_DC4,
 		.type = REGULATOR_VOLTAGE,
 		.n_voltages = WM8350_DCDC_MAX_VSEL + 1,
+		.min_uV = 850000,
+		.uV_step = 25000,
 		.vsel_reg = WM8350_DCDC4_CONTROL,
 		.vsel_mask = WM8350_DC4_VSEL_MASK,
 		.enable_reg = WM8350_DCDC_LDO_REQUESTED,