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

This reverts commit 232ed3ca534708527a9515c7c41bc3542949525c.

In exynos boards, ${console} is used to set bootargs but it sets
without "console=", so CONFIG_DEFAULT_CONSOLE for these boards is
designated with "console=" but it is removed. So revert the commit.

References for using ${console} in
   board/samsung/common/bootscripts/autoboot.cmd
   board/samsung/common/bootscripts/bootzimg.cmd

Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/include/configs/trats2.h b/include/configs/trats2.h
index f1e4cba..9c6b2bb 100644
--- a/include/configs/trats2.h
+++ b/include/configs/trats2.h
@@ -34,7 +34,7 @@
 /* Console configuration */
 
 #define CONFIG_BOOTCOMMAND		"run autoboot"
-#define CONFIG_DEFAULT_CONSOLE		"ttySAC2,115200n8"
+#define CONFIG_DEFAULT_CONSOLE		"console=ttySAC2,115200n8\0"
 
 #define CONFIG_SYS_INIT_SP_ADDR	(CONFIG_SYS_LOAD_ADDR \
 					- GENERATED_GBL_DATA_SIZE)
@@ -103,7 +103,7 @@
 	"boottrace=setenv opts initcall_debug; run bootcmd\0" \
 	"verify=n\0" \
 	"rootfstype=ext4\0" \
-	"console=" CONFIG_DEFAULT_CONSOLE "\0" \
+	"console=" CONFIG_DEFAULT_CONSOLE \
 	"kernelname=uImage\0" \
 	"loaduimage=ext4load mmc ${mmcdev}:${mmcbootpart} 0x40007FC0 " \
 		"${kernelname}\0" \