microblaze: Fix watchdog initialization

The patch:
"blackfin: Move blackfin watchdog driver out of the blackfin arch folder."
(sha1: e9a389a184)
changed hw_watchdog_init() prototype which didn't match
with Microblaze one.
This patch fixes the driver and Microblaze initialization.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

arch/microblaze/include/asm/processor.h

@@ -16,7 +16,6 @@ extern char __text_start[];
 void board_init(void);
 
 /* Watchdog functions */
-extern int hw_watchdog_init(void);
 extern void hw_watchdog_disable(void);
 
 #endif /* __ASM_MICROBLAZE_PROCESSOR_H */

arch/microblaze/lib/board.c

@@ -46,9 +46,6 @@ init_fnc_t *init_sequence[] = {
 	serial_init,
 	console_init_f,
 	interrupts_init,
-#ifdef CONFIG_XILINX_TB_WATCHDOG
-	hw_watchdog_init,
-#endif
 	timer_init,
 	NULL,
 };
@@ -97,6 +94,9 @@ void board_init_f(ulong not_used)
 
 	serial_initialize();
 
+#ifdef CONFIG_XILINX_TB_WATCHDOG
+	hw_watchdog_init();
+#endif
 	for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
 		WATCHDOG_RESET();
 		if ((*init_fnc_ptr) () != 0)