arm: dts: bubblegum_96: Enable UART5 for serial console

This commit enables UART5 found in S900 SoC for serial console support.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>

arch/arm/dts/bubblegum_96.dts

@@ -12,8 +12,20 @@
 	model = "Bubblegum-96";
 	compatible = "ucrobotics,bubblegum-96", "actions,s900";
 
+	aliases {
+		serial5 = &uart5;
+	};
+
+	chosen {
+		stdout-path = "serial5:115200n8";
+	};
+
 	memory@0 {
 		device_type = "memory";
 		reg = <0x0 0x0 0x0 0x80000000>;
 	};
 };
+
+&uart5 {
+	status = "okay";
+};