msm: krait-regulator: use phase management for v2

The PMIC 8841 v2 that comes with msm8974 v2 is capable of doing
phase switching on ganged regulators. Enable this feature for
v2.

Change-Id: I21826f4cf7be332f5ab7621325fa6cbe6aa2ea95
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
diff --git a/arch/arm/boot/dts/msm8974-v2.dtsi b/arch/arm/boot/dts/msm8974-v2.dtsi
index 1a7c628..7e6c0bf 100644
--- a/arch/arm/boot/dts/msm8974-v2.dtsi
+++ b/arch/arm/boot/dts/msm8974-v2.dtsi
@@ -111,3 +111,7 @@
 		<2024000 1212000>,
 		<2132000 1279000>;
 };
+
+&krait_pdn {
+	qcom,use-phase-switching;
+};