cpupowerutils: bench: trivial fix of spelling mistake on "average"

fix spelling mistake, avarage -> average
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Thomas Renninger <trenn@suse.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

tools/power/cpupower/bench/README-BENCH

@@ -113,7 +113,7 @@ cpufreq-bench Command Usage
 -c, --cpu=<unsigned int>        CPU Number to use, starting at 0
 -p, --prio=<priority>           scheduler priority, HIGH, LOW or DEFAULT
 -g, --governor=<governor>       cpufreq governor to test
--n, --cycles=<int>              load/sleep cycles to get an avarage value to compare
+-n, --cycles=<int>              load/sleep cycles to get an average value to compare
 -r, --rounds<int>               load/sleep rounds
 -f, --file=<configfile>         config file to use
 -o, --output=<dir>              output dir, must exist

tools/power/cpupower/bench/benchmark.c

@@ -130,7 +130,7 @@ void start_benchmark(struct config *config)
 			_round, load_time, sleep_time);
 
 		if (config->verbose)
-			printf("avarage: %lius, rps:%li\n",
+			printf("average: %lius, rps:%li\n",
 				load_time / calculations,
 				1000000 * calculations / load_time);
 
@@ -177,7 +177,7 @@ void start_benchmark(struct config *config)
 
 		progress_time += sleep_time + load_time;
 
-		/* compare the avarage sleep/load cycles  */
+		/* compare the average sleep/load cycles  */
 		fprintf(config->output, "%li ",
 			powersave_time / config->cycles);
 		fprintf(config->output, "%.3f\n",