ARM: dts: msm: update mdss gdsc status to hw control for sdm845

Update mdss gdsc status to hw control for sdm845
target to allow mdss gdsc power collapse through
display RSC hardware mode-2.

Change-Id: Ic242459d68acc2779bad55a56770cd42f4ca747b
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>
diff --git a/arch/arm64/boot/dts/qcom/msm-gdsc-sdm845.dtsi b/arch/arm64/boot/dts/qcom/msm-gdsc-sdm845.dtsi
index 64cb626..84a6a84 100644
--- a/arch/arm64/boot/dts/qcom/msm-gdsc-sdm845.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm-gdsc-sdm845.dtsi
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2016-2017, The Linux Foundation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
@@ -179,6 +179,7 @@
 		regulator-name = "mdss_core_gdsc";
 		reg = <0xaf03000 0x4>;
 		qcom,poll-cfg-gdscr;
+		qcom,support-hw-trigger;
 		status = "disabled";
 	};