[IA64] cleanup CPU drift print

This patch skips printing drift information of a cpu where
ITC drift information is not supported by SAL.  Without this,
bogus value (-1ppm) is printed on boot.
 
 CPU 1: base freq=200.007MHz, ITC ratio=10/2, ITC freq=1000.035MHz+/--1ppm
  
is now
   
 CPU 1: base freq=200.007MHz, ITC ratio=10/2, ITC freq=1000.035MHz
Signed-off-by: Takayoshi Kochi <t-kochi@bq.jp.nec.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

arch/ia64/kernel/time.c

@@ -190,17 +190,20 @@ ia64_init_itm (void)
 		itc_ratio.den = 1;	/* avoid division by zero */
 
 	itc_freq = (platform_base_freq*itc_ratio.num)/itc_ratio.den;
-	if (platform_base_drift != -1)
-		itc_drift = platform_base_drift*itc_ratio.num/itc_ratio.den;
-	else
-		itc_drift = -1;
 
 	local_cpu_data->itm_delta = (itc_freq + HZ/2) / HZ;
 	printk(KERN_DEBUG "CPU %d: base freq=%lu.%03luMHz, ITC ratio=%lu/%lu, "
-	       "ITC freq=%lu.%03luMHz+/-%ldppm\n", smp_processor_id(),
+	       "ITC freq=%lu.%03luMHz", smp_processor_id(),
 	       platform_base_freq / 1000000, (platform_base_freq / 1000) % 1000,
-	       itc_ratio.num, itc_ratio.den, itc_freq / 1000000, (itc_freq / 1000) % 1000,
-	       itc_drift);
+	       itc_ratio.num, itc_ratio.den, itc_freq / 1000000, (itc_freq / 1000) % 1000);
+
+	if (platform_base_drift != -1) {
+		itc_drift = platform_base_drift*itc_ratio.num/itc_ratio.den;
+		printk("+/-%ldppm\n", itc_drift);
+	} else {
+		itc_drift = -1;
+		printk("\n");
+	}
 
 	local_cpu_data->proc_freq = (platform_base_freq*proc_ratio.num)/proc_ratio.den;
 	local_cpu_data->itc_freq = itc_freq;