Fix various typos of valid in comments

Fix various typos of valid.

Signed-off-by: Nikanth Karthikesan <knikanth@suse.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/char/pcmcia/cm4000_cs.c b/drivers/char/pcmcia/cm4000_cs.c
index ec73d9f..273be76 100644
--- a/drivers/char/pcmcia/cm4000_cs.c
+++ b/drivers/char/pcmcia/cm4000_cs.c
@@ -1667,7 +1667,7 @@
 	/* opening will always block since the
 	 * monitor will be started by open, which
 	 * means we have to wait for ATR becoming
-	 * vaild = block until valid (or card
+	 * valid = block until valid (or card
 	 * inserted)
 	 */
 	if (filp->f_flags & O_NONBLOCK) {