[CPUFREQ] Export an array of acpi driver supported frequencies in sysfs

From Dominik.

arch/i386/kernel/cpu/cpufreq/acpi.c

@@ -331,7 +331,7 @@ acpi_cpufreq_cpu_init (
 			data->freq_table[i].frequency = CPUFREQ_TABLE_END;
 	}
 
-	result = cpufreq_frequency_table_cpuinfo(policy, &data->freq_table[0]);
+	result = cpufreq_frequency_table_cpuinfo(policy, data->freq_table);
 	if (result) {
 		goto err_freqfree;
 	}
@@ -346,6 +346,7 @@ acpi_cpufreq_cpu_init (
 			(u32) data->acpi_data.states[i].power,
 			(u32) data->acpi_data.states[i].transition_latency);
 
+	cpufreq_frequency_table_get_attr(data->freq_table, policy->cpu);
 	return_VALUE(result);
 
  err_freqfree:
@@ -370,6 +371,7 @@ acpi_cpufreq_cpu_exit (
 	ACPI_FUNCTION_TRACE("acpi_cpufreq_cpu_exit");
 
 	if (data) {
+		cpufreq_frequency_table_put_attr(policy->cpu);
 		acpi_io_data[policy->cpu] = NULL;
 		acpi_processor_unregister_performance(&data->acpi_data, policy->cpu);
 		kfree(data);
@@ -379,6 +381,11 @@ acpi_cpufreq_cpu_exit (
 }
 
 
+static struct freq_attr* acpi_cpufreq_attr[] = {
+	&cpufreq_freq_attr_scaling_available_freqs,
+	NULL,
+};
+
 static struct cpufreq_driver acpi_cpufreq_driver = {
 	.verify 	= acpi_cpufreq_verify,
 	.target 	= acpi_cpufreq_target,
@@ -386,6 +393,7 @@ static struct cpufreq_driver acpi_cpufreq_driver = {
 	.exit		= acpi_cpufreq_cpu_exit,
 	.name		= "acpi-cpufreq",
 	.owner		= THIS_MODULE,
+	.attr           = acpi_cpufreq_attr,
 };