Devkit8000: Change console from ttyS2 to ttyO2

The omap serial names have changed from ttySx to ttyOx,
so the console should be also changed to support this.
Signed-off-by: NThomas Weber <weber@corscience.de>
Signed-off-by: NSandeep Paulraj <s-paulraj@ti.com>

include/configs/devkit8000.h

@@ -181,7 +181,7 @@
 
 #define CONFIG_EXTRA_ENV_SETTINGS \
 	"loadaddr=0x82000000\0" \
-	"console=ttyS2,115200n8\0" \
+	"console=ttyO2,115200n8\0" \
 	"mmcdev=0\0" \
 	"vram=12M\0" \
 	"dvimode=1024x768MR-16@60\0" \