malloc: remove extern declarations of malloc_bin_reloc() in board.c files

Declare malloc_bin_reloc() in malloc.h and remove all extern declarations
in various board.c files to get rid of one checkpatch.pl warning.

Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Andreas Bießmann <andreas.devel@gmail.com>
Cc: Jason Jin <Jason.jin@freescale.com>
Cc: Macpaul Lin <macpaul@andestech.com>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Acked-by: Andreas Bießmann <andreas.devel@gmail.com>
diff --git a/arch/avr32/lib/board.c b/arch/avr32/lib/board.c
index d7a64b4..9d3b76e 100644
--- a/arch/avr32/lib/board.c
+++ b/arch/avr32/lib/board.c
@@ -250,7 +250,6 @@
 
 void board_init_r(gd_t *new_gd, ulong dest_addr)
 {
-	extern void malloc_bin_reloc (void);
 #ifndef CONFIG_ENV_IS_NOWHERE
 	extern char * env_name_spec;
 #endif
diff --git a/arch/m68k/lib/board.c b/arch/m68k/lib/board.c
index 65a8595..2add630 100644
--- a/arch/m68k/lib/board.c
+++ b/arch/m68k/lib/board.c
@@ -389,7 +389,6 @@
 {
 	char *s;
 	bd_t *bd;
-	extern void malloc_bin_reloc (void);
 
 #ifndef CONFIG_ENV_IS_NOWHERE
 	extern char * env_name_spec;
diff --git a/arch/mips/lib/board.c b/arch/mips/lib/board.c
index 62d47a8..b14b33e 100644
--- a/arch/mips/lib/board.c
+++ b/arch/mips/lib/board.c
@@ -248,7 +248,6 @@
 #ifndef CONFIG_SYS_NO_FLASH
 	ulong size;
 #endif
-	extern void malloc_bin_reloc(void);
 #ifndef CONFIG_ENV_IS_NOWHERE
 	extern char *env_name_spec;
 #endif
diff --git a/arch/nds32/lib/board.c b/arch/nds32/lib/board.c
index 2164a50..17d3ee0 100644
--- a/arch/nds32/lib/board.c
+++ b/arch/nds32/lib/board.c
@@ -306,8 +306,6 @@
 	bd_t *bd;
 	ulong malloc_start;
 
-	extern void malloc_bin_reloc(void);
-
 	gd = id;
 	bd = gd->bd;
 
diff --git a/arch/sparc/lib/board.c b/arch/sparc/lib/board.c
index 6f33666..ff0e0f2 100644
--- a/arch/sparc/lib/board.c
+++ b/arch/sparc/lib/board.c
@@ -62,7 +62,6 @@
 */
 
 extern void timer_interrupt_init(void);
-extern void malloc_bin_reloc(void);
 extern int do_ambapp_print(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]);
 extern int prom_init(void);
 
diff --git a/include/malloc.h b/include/malloc.h
index 6295929..84ecf79 100644
--- a/include/malloc.h
+++ b/include/malloc.h
@@ -937,6 +937,7 @@
 extern ulong mem_malloc_brk;
 
 void mem_malloc_init(ulong start, ulong size);
+void malloc_bin_reloc(void);
 
 #ifdef __cplusplus
 };  /* end of extern "C" */