ARM: dts: msm: add refgen regulator device for SDM845 v2

Add a refgen-regulator device for the South refgen used by the
CSI and DSI PHYs.

Change-Id: Ie8aad1e7dfbe1e318d7f2b1c6fcfcd4d4fc3f7cd
Signed-off-by: David Collins <collinsd@codeaurora.org>
diff --git a/arch/arm64/boot/dts/qcom/sdm845-v2.dtsi b/arch/arm64/boot/dts/qcom/sdm845-v2.dtsi
index 64d6d52..13ec352 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-v2.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm845-v2.dtsi
@@ -624,6 +624,10 @@
 		404000000 444000000 533000000>;
 };
 
+&refgen {
+	status = "ok";
+};
+
 &spss_utils {
 	qcom,spss-dev-firmware-name  = "spss2d";	/* 8 chars max */
 	qcom,spss-test-firmware-name = "spss2t";	/* 8 chars max */