regulator: palmas: Fix smps6 - smps9 indices

The array indices used currently are dispalaced by 1 for
SMPS6 through SMPS10 in the respective places of voltage and ctrl
arrays hence fix the same as to assign the right voltage and ctrl
registers.

Signed-off-by: Keerthy <j-keerthy@ti.com>

drivers/power/regulator/palmas_regulator.c

@@ -356,7 +356,7 @@ static int palmas_smps_probe(struct udevice *dev)
 		case 8:
 		case 9:
 		case 10:
-			idx = dev->driver_data - 4;
+			idx = dev->driver_data - 3;
 			uc_pdata->ctrl_reg = palmas_smps_ctrl[type][idx];
 			uc_pdata->volt_reg = palmas_smps_volt[type][idx];
 			break;