cpufreq: fix minor typo in struct cpufreq_driver doc comment

Delete the duplicate "to", possibly double-typed.
Signed-off-by: Wang Wenhu <wenhu.wang@vivo.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

include/linux/cpufreq.h

@@ -330,7 +330,7 @@ struct cpufreq_driver {
 	 *
 	 * get_intermediate should return a stable intermediate frequency
 	 * platform wants to switch to and target_intermediate() should set CPU
-	 * to to that frequency, before jumping to the frequency corresponding
+	 * to that frequency, before jumping to the frequency corresponding
 	 * to 'index'. Core will take care of sending notifications and driver
 	 * doesn't have to handle them in target_intermediate() or
 	 * target_index().