ARM: dts: omap3-gta04: Enable mcbps2 necessary for audio

mcbsp2 is used in gta04 soundcard config and by default
is disabled so enable it for gta04.
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/omap3-gta04.dtsi

@@ -498,3 +498,7 @@ filesystem@680000 {
 		};
 	};
 };
+
+&mcbsp2 {
+	status = "okay";
+};