misc doc and kconfig typos

Fix various typos in kernel docs and Kconfigs, 2.6.21-rc4.

Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/Documentation/scsi/aic7xxx_old.txt b/Documentation/scsi/aic7xxx_old.txt
index 05667e7..7bd210a 100644
--- a/Documentation/scsi/aic7xxx_old.txt
+++ b/Documentation/scsi/aic7xxx_old.txt
@@ -356,7 +356,7 @@
         or enable Tagged Command Queueing (TCQ) on specific devices.  As of
 	driver version 5.1.11, TCQ is now either on or off by default
 	according to the setting you choose during the make config process.
-	In order to en/disable TCQ for certian devices at boot time, a user
+	In order to en/disable TCQ for certain devices at boot time, a user
 	may use this boot param.  The driver will then parse this message out
         and en/disable the specific device entries that are present based upon
         the value given.  The param line is parsed in the following manner: