[CPUFREQ] powernow-k8 compile fix.

Make it compile on UP.
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Jones <davej@redhat.com>

arch/i386/kernel/cpu/cpufreq/powernow-k8.c

@@ -1322,16 +1322,21 @@ static struct cpufreq_driver cpufreq_amd64_driver = {
 static int __cpuinit powernowk8_init(void)
 {
 	unsigned int i, supported_cpus = 0;
+	unsigned int booted_cores = 1;
 
 	for_each_online_cpu(i) {
 		if (check_supported_cpu(i))
 			supported_cpus++;
 	}
 
+#ifdef CONFIG_SMP
+	booted_cores = cpu_data[0].booted_cores;
+#endif
+
 	if (supported_cpus == num_online_cpus()) {
 		printk(KERN_INFO PFX "Found %d %s "
 			"processors (%d cpu cores) (" VERSION ")\n",
-			supported_cpus/cpu_data[0].booted_cores,
+			supported_cpus/booted_cores,
 			boot_cpu_data.x86_model_id, supported_cpus);
 		return cpufreq_register_driver(&cpufreq_amd64_driver);
 	}