arm: config: fix default console only to specify the device

Since CONFIG_DEFAULT_CONSOLE is already started with "console=",
the console argument in CONFIG_EXTRA_ENV_SETTINGS is expanded to
"console=console=ttySAC1,115200n8" and this causes the wrong
console device.

  #define CONFIG_DEFAULT_CONSOLE         "console=ttySAC1,115200n8\0"
  ...
  #define CONFIG_EXTRA_ENV_SETTINGS \
		"console=" CONFIG_DEFAULT_CONSOLE

Signed-off-by: Dongjin Kim <tobetter@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/include/configs/odroid.h b/include/configs/odroid.h
index 22e9c82..60ed013 100644
--- a/include/configs/odroid.h
+++ b/include/configs/odroid.h
@@ -44,7 +44,7 @@
 /* Console configuration */
 
 #define CONFIG_BOOTCOMMAND		"run autoboot"
-#define CONFIG_DEFAULT_CONSOLE		"console=ttySAC1,115200n8\0"
+#define CONFIG_DEFAULT_CONSOLE		"ttySAC1,115200n8"
 
 #define CONFIG_SYS_INIT_SP_ADDR	(CONFIG_SYS_LOAD_ADDR \
 					- GENERATED_GBL_DATA_SIZE)
@@ -158,7 +158,7 @@
 		"elif test -e mmc 0 uImage; then; " \
 			"run boot_uimg;" \
 		"fi;\0" \
-	"console=" CONFIG_DEFAULT_CONSOLE \
+	"console=" CONFIG_DEFAULT_CONSOLE "\0" \
 	"mmcbootdev=0\0" \
 	"mmcbootpart=1\0" \
 	"mmcrootdev=0\0" \