cpufreq: ppc-corenet-cpufreq: Fix __udivdi3 modpost error

bfa709bc823fc32ee8dd5220d1711b46078235d8 (cpufreq: powerpc: add cpufreq
transition latency for FSL e500mc SoCs) introduced a modpost error:

ERROR: "__udivdi3" [drivers/cpufreq/ppc-corenet-cpufreq.ko] undefined!
make[1]: *** [__modpost] Error 1

Fix this by avoiding 64 bit integer division.

gcc version 4.8.2

Fixes: bfa709bc823f (cpufreq: powerpc: add cpufreq transition latency for FSL e500mc SoCs)
Signed-off-by: Tim Gardner <[e-mail]>
Signed-off-by: Rafael J. Wysocki <[e-mail]>

drivers/cpufreq/ppc-corenet-cpufreq.c

···
 	struct cpufreq_frequency_table *table;
 	struct cpu_data *data;
 	unsigned int cpu = policy->cpu;
+	u64 transition_latency_hz;
 
 	np = of_get_cpu_node(cpu, NULL);
 	if (!np)
···
 	for_each_cpu(i, per_cpu(cpu_mask, cpu))
 		per_cpu(cpu_data, i) = data;
 
+	transition_latency_hz = 12ULL * NSEC_PER_SEC;
 	policy->cpuinfo.transition_latency =
-				(12ULL * NSEC_PER_SEC) / fsl_get_sys_freq();
+		do_div(transition_latency_hz, fsl_get_sys_freq());
+
 	of_node_put(np);
 
 	return 0;