regulator: arizona: Increase ramp delay for high current regulators

As per latest evaluation.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/drivers/regulator/arizona-ldo1.c b/drivers/regulator/arizona-ldo1.c
index ed7beec..81d8681 100644
--- a/drivers/regulator/arizona-ldo1.c
+++ b/drivers/regulator/arizona-ldo1.c
@@ -131,7 +131,7 @@
 	.min_uV = 900000,
 	.uV_step = 50000,
 	.n_voltages = 8,
-	.enable_time = 500,
+	.enable_time = 1500,
 
 	.owner = THIS_MODULE,
 };