eCryptfs: export key type

This is the second in a series of three patches for the eCryptfs kernel
module.

The key_type_user symbol in user_defined.c needs to be exported.

-- 
Phillip Hellewell <phillip AT hellewell.homeip.net>

diff -Naur linux-2.6.12-rc4-mm2/security/keys/user_defined.c
linux-2.6.12-rc4-mm2-ecryptfs/security/keys/user_defined.c
--- linux-2.6.12-rc4-mm2/security/keys/user_defined.c	2005-05-23 21:20:38.252134304 -0600
+++ linux-2.6.12-rc4-mm2-ecryptfs/security/keys/user_defined.c	2005-05-23 21:38:04.092142456 -0600
@@ -48,6 +48,8 @@
 	char		data[0];	/* actual data */
 };
 
+EXPORT_SYMBOL( key_type_user );
+
 /*****************************************************************************/
 /*
  * instantiate a user defined key