exynos: Rename -dt config files to -common

We want exynos5250-dt.h to be a board which can support any exynos5250
device. This matches the naming used by Linux. As a first step, rename
the existing -dt files to -common to make it clear they are common files,
and not specific boards.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/include/configs/trats.h b/include/configs/trats.h
index 43751e7..c7edd07 100644
--- a/include/configs/trats.h
+++ b/include/configs/trats.h
@@ -10,7 +10,7 @@
 #ifndef __CONFIG_TRATS_H
 #define __CONFIG_TRATS_H
 
-#include <configs/exynos4-dt.h>
+#include <configs/exynos4-common.h>
 
 #define CONFIG_SYS_PROMPT	"Trats # "	/* Monitor Command Prompt */