cpufreq: armada-8k: make both cpu masks static

An earlier patch marked one of the two CPU masks as 'static' to reduce stack
usage, but if CONFIG_NR_CPUS is large enough, the function still produces
a warning for compile testing:

drivers/cpufreq/armada-8k-cpufreq.c: In function 'armada_8k_cpufreq_init':
drivers/cpufreq/armada-8k-cpufreq.c:203:1: error: the frame size of 1416 bytes is larger than 1408 bytes [-Werror=frame-larger-than=]

Normally this should be done using alloc_cpumask_var(), but since the
driver already has a static mask and the probe function is not called
concurrently, use the same trick for both.

Fixes: 1ffec65 ("cpufreq: armada-8k: Avoid excessive stack usage")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

Author: arndb

drivers/cpufreq/armada-8k-cpufreq.c

@@ -132,7 +132,7 @@ static int __init armada_8k_cpufreq_init(void)
 	int ret = 0, opps_index = 0, cpu, nb_cpus;
 	struct freq_table *freq_tables;
 	struct device_node *node;
-	static struct cpumask cpus;
+	static struct cpumask cpus, shared_cpus;
 
 	node = of_find_matching_node_and_match(NULL, armada_8k_cpufreq_of_match,
 					       NULL);
@@ -154,7 +154,6 @@ static int __init armada_8k_cpufreq_init(void)
 	 * divisions of it).
 	 */
 	for_each_cpu(cpu, &cpus) {
-		struct cpumask shared_cpus;
 		struct device *cpu_dev;
 		struct clk *clk;