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/net/s2io.c b/drivers/net/s2io.c
index ddccf5f..075eedc 100644
--- a/drivers/net/s2io.c
+++ b/drivers/net/s2io.c
@@ -3238,7 +3238,7 @@
 
 /**
  *  s2io_chk_xpak_counter - Function to check the status of the xpak counters
- *  @counter      : couter value to be updated
+ *  @counter      : counter value to be updated
  *  @flag         : flag to indicate the status
  *  @type         : counter type
  *  Description: