regulator: tps6287x: Fix missing .n_voltages setting

Otherwise, regulator_list_voltage() will return -EINVAL.

Signed-off-by: Axel Lin <axel.lin@ingics.com
Link: https://lore.kernel.org/r/20230516082333.466429-1-axel.lin@ingics.com
Signed-off-by: Mark Brown <broonie@kernel.org

drivers/regulator/tps6287x-regulator.c

@@ -119,6 +119,7 @@ static struct regulator_desc tps6287x_reg = {
 	.ramp_mask = TPS6287X_CTRL1_VRAMP,
 	.ramp_delay_table = tps6287x_ramp_table,
 	.n_ramp_values = ARRAY_SIZE(tps6287x_ramp_table),
+	.n_voltages = 256,
 	.linear_ranges = tps6287x_voltage_ranges,
 	.n_linear_ranges = ARRAY_SIZE(tps6287x_voltage_ranges),
 	.linear_range_selectors = tps6287x_voltage_range_sel,