mpc85xx: Fix a compiler warning when CONFIG_WATCHDOG is turned on

cpu.c:288:2:
warning: implicit declaration of function 'reset_85xx_watchdog'
[-Wimplicit-function-declaration]

Signed-off-by: Horst Kronstorfer <hkronsto@frequentis.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>

arch/powerpc/cpu/mpc85xx/cpu.c

@@ -281,14 +281,6 @@ unsigned long get_tbclk (void)
 
 
 #if defined(CONFIG_WATCHDOG)
-void
-watchdog_reset(void)
-{
-	int re_enable = disable_interrupts();
-	reset_85xx_watchdog();
-	if (re_enable) enable_interrupts();
-}
-
 void
 reset_85xx_watchdog(void)
 {
@@ -297,6 +289,16 @@ reset_85xx_watchdog(void)
 	 */
 	mtspr(SPRN_TSR, TSR_WIS);
 }
+
+void
+watchdog_reset(void)
+{
+	int re_enable = disable_interrupts();
+
+	reset_85xx_watchdog();
+	if (re_enable)
+		enable_interrupts();
+}
 #endif	/* CONFIG_WATCHDOG */
 
 /*