encrypted-keys: create encrypted-keys directory

Move all files associated with encrypted keys to keys/encrypted-keys.

Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
diff --git a/security/keys/Makefile b/security/keys/Makefile
index b34cc6e..a56f1ff 100644
--- a/security/keys/Makefile
+++ b/security/keys/Makefile
@@ -14,7 +14,7 @@
 	user_defined.o
 
 obj-$(CONFIG_TRUSTED_KEYS) += trusted.o
-obj-$(CONFIG_ENCRYPTED_KEYS) += ecryptfs_format.o encrypted.o
+obj-$(CONFIG_ENCRYPTED_KEYS) += encrypted-keys/
 obj-$(CONFIG_KEYS_COMPAT) += compat.o
 obj-$(CONFIG_PROC_FS) += proc.o
 obj-$(CONFIG_SYSCTL) += sysctl.o