ARM: dts: msm: Add dpdm-supply entry to PMI8998

Specify dpdm supply to expose DPDM regulator to PMI8998 charger.

Change-Id: I38096f90e0701e951f5b65902815328e7916b3ec
Signed-off-by: Harry Yang <harryy@codeaurora.org>
diff --git a/arch/arm64/boot/dts/qcom/pmi8998.dtsi b/arch/arm64/boot/dts/qcom/pmi8998.dtsi
index c8dc1f4..09405ee 100644
--- a/arch/arm64/boot/dts/qcom/pmi8998.dtsi
+++ b/arch/arm64/boot/dts/qcom/pmi8998.dtsi
@@ -97,6 +97,7 @@
 
 			qcom,boost-threshold-ua = <100000>;
 			qcom,wipower-max-uw = <5000000>;
+			dpdm-supply = <&qusb_phy0>;
 
 			qcom,thermal-mitigation
 					= <3000000 1500000 1000000 500000>;