ColdFire:Update the timer_init since it was unified.

Signed-off-by: Jason Jin <Jason.jin@freescale.com>
diff --git a/arch/m68k/lib/time.c b/arch/m68k/lib/time.c
index a316cdf..a0e2441 100644
--- a/arch/m68k/lib/time.c
+++ b/arch/m68k/lib/time.c
@@ -91,7 +91,7 @@
 	}
 }
 
-void timer_init(void)
+int timer_init(void)
 {
 	volatile dtmr_t *timerp = (dtmr_t *) (CONFIG_SYS_TMR_BASE);
 
@@ -114,6 +114,8 @@
 	/* set a period of 1us, set timer mode to restart and enable timer and interrupt */
 	timerp->tmr = CONFIG_SYS_TIMER_PRESCALER | DTIM_DTMR_CLK_DIV1 |
 	    DTIM_DTMR_FRR | DTIM_DTMR_ORRI | DTIM_DTMR_RST_EN;
+
+	return 0;
 }
 
 ulong get_timer(ulong base)
@@ -162,6 +164,8 @@
 	timerp->pcsr = PIT_PCSR_OVW;
 	timerp->pmr = lastinc = 0;
 	timerp->pcsr |= PIT_PCSR_PRE(CONFIG_SYS_PIT_PRESCALE) | PIT_PCSR_EN;
+
+	return 0;
 }
 
 ulong get_timer(ulong base)