Add pinctrl and GPIO node to mt8173-evb.dts.

Signed-off-by: Hongzhou Yang <hongzhou.y...@mediatek.com>
---
 arch/arm64/boot/dts/mediatek/mt8173-evb.dts |    8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8173-evb.dts 
b/arch/arm64/boot/dts/mediatek/mt8173-evb.dts
index c9bc71b..bd473c8 100644
--- a/arch/arm64/boot/dts/mediatek/mt8173-evb.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8173-evb.dts
@@ -14,6 +14,7 @@
 
 /dts-v1/;
 #include "mt8173.dtsi"
+#include <dt-bindings/pinctrl/mt6397-pinfunc.h>
 
 / {
        model = "mediatek,mt8173-evb";
@@ -43,6 +44,13 @@
                interrupt-controller;
                #interrupt-cells = <2>;
 
+               pio6397: pinctrl@c000 {
+                       compatible = "mediatek,mt6397-pinctrl";
+                       pins-are-numbered;
+                       gpio-controller;
+                       #gpio-cells = <2>;
+               };
+
                rtc: rtc@e000 {
                        compatible = "mediatek,mt6397-rtc";
                };
-- 
1.7.9.5

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