regulator: tps6287x: Fix n_voltages

There are 256 possible voltage settings for each range, not 256 possible
voltage settings in total.

Fixes: 15a1cd24 ("regulator: tps6287x: Fix missing .n_voltages setting")
Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com
Link: https://lore.kernel.org/r/20230829-tps-voltages-v1-1-7ba4f958a194@axis.com
Signed-off-by: Mark Brown <broonie@kernel.org

drivers/regulator/tps6287x-regulator.c

@@ -119,7 +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,
+	.n_voltages = 256 * ARRAY_SIZE(tps6287x_voltage_ranges),
 	.linear_ranges = tps6287x_voltage_ranges,
 	.n_linear_ranges = ARRAY_SIZE(tps6287x_voltage_ranges),
 	.linear_range_selectors_bitfield = tps6287x_voltage_range_sel,