regulator: max8973: Fix up ramp_delay for MAX8973_RAMP_25mV_PER_US case

Fix trivial typo.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/max8973-regulator.c

@@ -312,7 +312,7 @@ static int max8973_init_dcdc(struct max8973_chip *max,
 		max->desc.ramp_delay = 12000;
 		break;
 	case MAX8973_RAMP_25mV_PER_US:
-		max->desc.ramp_delay = 252000;
+		max->desc.ramp_delay = 25000;
 		break;
 	case MAX8973_RAMP_50mV_PER_US:
 		max->desc.ramp_delay = 50000;