tree-wide: fix typos "couter" -> "counter"

This patch was generated by

	git grep -E -i -l 'couter' | xargs -r perl -p -i -e 's/couter/counter/'

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/s390/block/dasd_proc.c b/drivers/s390/block/dasd_proc.c
index 654daa3..5f23eca 100644
--- a/drivers/s390/block/dasd_proc.c
+++ b/drivers/s390/block/dasd_proc.c
@@ -215,7 +215,7 @@
 	}
 
 	prof = &dasd_global_profile;
-	/* prevent couter 'overflow' on output */
+	/* prevent counter 'overflow' on output */
 	for (factor = 1; (prof->dasd_io_reqs / factor) > 9999999;
 	     factor *= 10);