Fix typo in chosen parameter of pcm052.dts

Fix typo "choosen" instead of "chosen" in pcm052.dts.
Not tested but should fix boot process and terminal output.

Signed-off-by: Alexander Merkle <alexander.merkle@lauterbach.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

arch/arm/dts/pcm052.dts

@@ -11,7 +11,7 @@
 	model = "Phytec phyCORE-Vybrid";
 	compatible = "phytec,pcm052", "fsl,vf610";
 
-	choosen {
+	chosen {
 		stdout-path = &uart1;
 	};