samsung: common: Add file for common functions, draw_logo() cleanup.

Changes:

new file:
- board/samsung/common/misc.c
  depends on: CONFIG_MISC_COMMON
- move draw_logo() to misc.c

configs: trats, trats2, universal:
- enable CONFIG_MISC_COMMON,
- enable CONFIG_MISC_INIT_R,
- add misc_init_r() and call draw_logo() in it.

Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/include/configs/trats.h b/include/configs/trats.h
index 9a92783..7a9c60b 100644
--- a/include/configs/trats.h
+++ b/include/configs/trats.h
@@ -306,6 +306,11 @@
 #define CONFIG_USB_GADGET_VBUS_DRAW	2
 #define CONFIG_USB_CABLE_CHECK
 
+/* Common misc for Samsung */
+#define CONFIG_MISC_COMMON
+
+#define CONFIG_MISC_INIT_R
+
 /* LCD */
 #define CONFIG_EXYNOS_FB
 #define CONFIG_LCD