regulator: tps65910: Add missing breaks in switch/case

Also add a default case in tps65910_list_voltage_dcdc to silence
'volt' may be used uninitialized in this function warning.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>

drivers/regulator/tps65910-regulator.c

@@ -759,8 +759,13 @@ static int tps65910_list_voltage_dcdc(struct regulator_dev *dev,
 		mult = (selector / VDD1_2_NUM_VOLTS) + 1;
 		volt = VDD1_2_MIN_VOLT +
 				(selector % VDD1_2_NUM_VOLTS) * VDD1_2_OFFSET;
+		break;
 	case TPS65911_REG_VDDCTRL:
 		volt = VDDCTRL_MIN_VOLT + (selector * VDDCTRL_OFFSET);
+		break;
+	default:
+		BUG();
+		return -EINVAL;
 	}
 
 	return  volt * 100 * mult;
@@ -898,9 +903,11 @@ static __devinit int tps65910_probe(struct platform_device *pdev)
 	case TPS65910:
 		pmic->get_ctrl_reg = &tps65910_get_ctrl_register;
 		info = tps65910_regs;
+		break;
 	case TPS65911:
 		pmic->get_ctrl_reg = &tps65911_get_ctrl_register;
 		info = tps65911_regs;
+		break;
 	default:
 		pr_err("Invalid tps chip version\n");
 		kfree(pmic);