tree-wide: s/widht/width/g typo in comments

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Cc: Jiri Kosina <trivial@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/video/pm2fb.c b/drivers/video/pm2fb.c
index 36436ee..27f93aa 100644
--- a/drivers/video/pm2fb.c
+++ b/drivers/video/pm2fb.c
@@ -896,7 +896,7 @@
 	 * Pseudocolor:
 	 *    uses offset = 0 && length = DAC register width.
 	 *    var->{color}.offset is 0
-	 *    var->{color}.length contains widht of DAC
+	 *    var->{color}.length contains width of DAC
 	 *    cmap is not used
 	 *    DAC[X] is programmed to (red, green, blue)
 	 * Truecolor: