Documentation: fix Documentation/security/00-INDEX

keys-ecryptfs.txt was missing from 00-INDEX.
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Documentation/security/00-INDEX

@@ -12,6 +12,8 @@ apparmor.txt
 	- documentation on the AppArmor security extension.
 credentials.txt
 	- documentation about credentials in Linux.
+keys-ecryptfs.txt
+	- description of the encryption keys for the ecryptfs filesystem.
 keys-request-key.txt
 	- description of the kernel key request service.
 keys-trusted-encrypted.txt