cpuidle: fix indentation of cpumask

Use tabs for cpumask indentation in struct cpuidle_driver.

[rjw: Changelog]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

include/linux/cpuidle.h

@@ -114,7 +114,7 @@ struct cpuidle_driver {
 	int			safe_state_index;
 
 	/* the driver handles the cpus in cpumask */
-	struct cpumask       *cpumask;
+	struct cpumask		*cpumask;
 };
 
 #ifdef CONFIG_CPU_IDLE