wifi: p54: Fix comment typo

The double `to' is duplicated in the comment, remove one.
Signed-off-by: Jason Wang <wangborong@cdjrlc.com>
Acked-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220811120340.12968-1-wangborong@cdjrlc.com

drivers/net/wireless/intersil/p54/main.c

@@ -635,7 +635,7 @@ static int p54_get_survey(struct ieee80211_hw *dev, int idx,
 				/*
 				 * hw/fw has not accumulated enough sample sets.
 				 * Wait for 100ms, this ought to be enough to
-				 * to get at least one non-null set of channel
+				 * get at least one non-null set of channel
 				 * usage statistics.
 				 */
 				msleep(100);