ARM: dts: qcom: apq8074-dragonboard: Use stdout-path

Use stdout-path so that we don't have to put the console on the
kernel command line.
Signed-off-by: NStephen Boyd <sboyd@codeaurora.org>

arch/arm/boot/dts/qcom-apq8074-dragonboard.dts

@@ -6,6 +6,14 @@
 	model = "Qualcomm APQ8074 Dragonboard";
 	compatible = "qcom,apq8074-dragonboard", "qcom,apq8074";
 
+	aliases {
+		serial0 = &blsp1_uart2;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
 	soc {
 		serial@f991e000 {
 			status = "ok";