eCryptfs: Move ecryptfs docs into Documentation/filesystems/

Signed-off-by: Josef 'Jeff' Sipek <jsipek@cs.sunysb.edu>
Acked-by: Michael Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/Documentation/ecryptfs.txt b/Documentation/filesystems/ecryptfs.txt
similarity index 100%
rename from Documentation/ecryptfs.txt
rename to Documentation/filesystems/ecryptfs.txt