common: move board_info.c prototypes in init.h

Move function prototype for common/init/board_init.c
from common.h to init.h

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
diff --git a/include/common.h b/include/common.h
index 6e7110c..3087505 100644
--- a/include/common.h
+++ b/include/common.h
@@ -66,6 +66,7 @@
  * common/board_f.c
  * common/init/board_init.c
  * common/board_r.c
+ * common/board_info.c
  */
 #include <init.h>
 
@@ -96,8 +97,6 @@
  */
 int run_command_list(const char *cmd, int len, int flag);
 
-int checkboard(void);
-int show_board_info(void);
 int checkflash(void);
 int checkdram(void);
 extern u8 __dtb_dt_begin[];	/* embedded device tree blob */