arm64: dts: qcom: db820c: Add pmi8994 RPM regulators

The PMI8994 provides 3 SPMS regulators and one boost/bypass regulator.
Define s1 and the boot/bypass and update pm8994 to appropriately
describe the supply from PMI8994.
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20200417070303.1376290-1-bjorn.andersson@linaro.orgSigned-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi

@@ -704,13 +704,18 @@ pm8994-regulators {
 		vdd_s10-supply = <&vph_pwr>;
 		vdd_s11-supply = <&vph_pwr>;
 		vdd_s12-supply = <&vph_pwr>;
+		vdd_l1-supply = <&vreg_s1b_1p025>;
 		vdd_l2_l26_l28-supply = <&vreg_s3a_1p3>;
 		vdd_l3_l11-supply = <&vreg_s8a_l3a_input>;
 		vdd_l4_l27_l31-supply = <&vreg_s3a_1p3>;
 		vdd_l5_l7-supply = <&vreg_s5a_2p15>;
 		vdd_l6_l12_l32-supply = <&vreg_s5a_2p15>;
 		vdd_l8_l16_l30-supply = <&vph_pwr>;
+		vdd_l9_l10_l18_l22-supply = <&vph_pwr_bbyp>;
+		vdd_l13_l19_l23_l24-supply = <&vph_pwr_bbyp>;
 		vdd_l14_l15-supply = <&vreg_s5a_2p15>;
+		vdd_l17_l29-supply = <&vph_pwr_bbyp>;
+		vdd_l20_l21-supply = <&vph_pwr_bbyp>;
 		vdd_l25-supply = <&vreg_s3a_1p3>;
 		vdd_lvs1_2-supply = <&vreg_s4a_1p8>;
 
@@ -895,6 +900,27 @@ vreg_lvs2a_1p8: lvs2 {
 			regulator-name = "vreg_lvs2a_1p8";
 		};
 	};
+
+	pmi8994-regulators {
+		compatible = "qcom,rpm-pmi8994-regulators";
+
+		vdd_s1-supply = <&vph_pwr>;
+		vdd_s2-supply = <&vph_pwr>;
+		vdd_s3-supply = <&vph_pwr>;
+		vdd_bst_byp-supply = <&vph_pwr>;
+
+		vph_pwr_bbyp: boost-bypass {
+			regulator-name = "vph_pwr_bbyp";
+			regulator-min-microvolt = <3300000>;
+			regulator-max-microvolt = <3300000>;
+		};
+
+		vreg_s1b_1p025: s1 {
+			regulator-name = "vreg_s1b_1p025";
+			regulator-min-microvolt = <1025000>;
+			regulator-max-microvolt = <1025000>;
+		};
+	};
 };
 
 &sdhc2 {