ARM: dts: msm: Modify LDO12A "init-voltage" to 1.8V for lagoon

As LDO12A is PON regulator, setting the "init-voltage" less than
the default voltage leads to momentary voltage dip on the LDO12A
output. To avoid this behaviour, set the "init-voltage" to a
default recommended value of 1.8V.

Change-Id: I47b735615af1182463001bae59a78be24734bc0f

qcom/lagoon-regulators.dtsi

@@ -271,7 +271,7 @@
 			qcom,set = <RPMH_REGULATOR_SET_ALL>;
 			regulator-min-microvolt = <1620000>;
 			regulator-max-microvolt = <1980000>;
-			qcom,init-voltage = <1620000>;
+			qcom,init-voltage = <1800000>;
 			qcom,init-mode = <RPMH_REGULATOR_MODE_LPM>;
 		};
 	};