Fix trivial typos in Kconfig* files

Fix several typos in help text in Kconfig* files.

Signed-off-by: David Sterba <dave@jikos.cz>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 620e14c..4ca0ab3 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -271,7 +271,7 @@
 
 	  Keys are allowed to be from 0 to 256 bits in length, in steps
 	  of 8 bits.  Also includes the 'Tnepres' algorithm, a reversed
-	  variant of Serpent for compatibility with old kerneli code.
+	  variant of Serpent for compatibility with old kerneli.org code.
 
 	  See also:
 	  <http://www.cl.cam.ac.uk/~rja14/serpent.html>