Set baud rate to 115200

Change-Id: I6dee6d7628283c7e89ae94611303e181de72c2ad
diff --git a/arch/arm64/boot/dts/mediatek/mt8167-coral.dts b/arch/arm64/boot/dts/mediatek/mt8167-coral.dts
index cbb7112..2398b2e 100644
--- a/arch/arm64/boot/dts/mediatek/mt8167-coral.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8167-coral.dts
@@ -19,7 +19,7 @@
 	};
 
 	chosen {
-		stdout-path = "serial0:921600n8";
+		stdout-path = "serial0:115200n8";
 	};
 
 	memory: memory@40000000 {