samsung: board: enable support of multiple board types

This change adds declaration of functions:
- set_board_type() - called at board_early_init_f()
- get_board_type() - called at checkboard()

For supporting multiple board types in a one config - it is welcome
to display the current board model. This is what get_board_type()
should return.

Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/board/samsung/common/board.c b/board/samsung/common/board.c
index 5693813..3d1cf43 100644
--- a/board/samsung/common/board.c
+++ b/board/samsung/common/board.c
@@ -137,7 +137,9 @@
 int board_early_init_f(void)
 {
 	int err;
-
+#ifdef CONFIG_BOARD_TYPES
+	set_board_type();
+#endif
 	err = board_uart_init();
 	if (err) {
 		debug("UART init failed\n");
@@ -147,7 +149,6 @@
 #ifdef CONFIG_SYS_I2C_INIT_BOARD
 	board_i2c_init(gd->fdt_blob);
 #endif
-
 	return exynos_early_init_f();
 }
 #endif
@@ -280,11 +281,15 @@
 #ifdef CONFIG_DISPLAY_BOARDINFO
 int checkboard(void)
 {
-	const char *board_name;
+	const char *board_info;
 
-	board_name = fdt_getprop(gd->fdt_blob, 0, "model", NULL);
-	printf("Board: %s\n", board_name ? board_name : "unknown");
+	board_info = fdt_getprop(gd->fdt_blob, 0, "model", NULL);
+	printf("Board: %s\n", board_info ? board_info : "unknown");
+#ifdef CONFIG_BOARD_TYPES
+	board_info = get_board_type();
 
+	printf("Model: %s\n", board_info ? board_info : "unknown");
+#endif
 	return 0;
 }
 #endif