ENGR00120456 mx51: set VIOHI always on

Set regulator VIOHI to be always on for several
soc power domains are supplied by VIOHI

Signed-off-by: Zhou Jingyu <Jingyu.Zhou@freescale.com>

arch/arm/mach-mx51/mx51_babbage_pmic_mc13892.c

@@ -178,6 +178,7 @@ static struct regulator_init_data sw4_init = {
 static struct regulator_init_data viohi_init = {
 	.constraints = {
 		.name = "VIOHI",
+		.always_on = 1,
 		.boot_on = 1,
 	}
 };