Add node /proc/board_info to display board info (2)

Show board type only.

Change-Id: I94c135e28fb10b577dcb49b75ca850fc44676ea0
Reviewed-on: https://tp-biosrd-v02/gerrit/80646
Reviewed-by: Alex Cheng(鄭富元) <Alex_Cheng@asus.com>
Tested-by: Alex Cheng(鄭富元) <Alex_Cheng@asus.com>

Author: Lyle_Lin

drivers/board-info/board-info.c

@@ -162,7 +162,7 @@ static void read_pcb_id(void)
 static int board_info_proc_read(struct seq_file *buf, void *v)
 {
 	/* Board info display */
-	seq_printf(buf, "%s\n%s\n%s\n", board_type, ram_size, pcb);
+	seq_printf(buf, "%s\n", board_type);
 	printk("[board_info] %s board_type=\'%s\' ram_size=\'%s' pcb=\'%s\'\n",
 		__func__, board_type, ram_size, pcb);
 	return 0;