uncrypt: Support file level encryption.

Bug: 22534003
Change-Id: I2bc22418c416491da573875dce78daed24f2c046
(cherry picked from commit 6e9dda70cb00dd1f1948e071d7df7ca6e2bd8332)
diff --git a/uncrypt/uncrypt.cpp b/uncrypt/uncrypt.cpp
index 20a2729..8785b29 100644
--- a/uncrypt/uncrypt.cpp
+++ b/uncrypt/uncrypt.cpp
@@ -146,7 +146,7 @@
             (path[len] == '/' || path[len] == 0)) {
             *encrypted = false;
             *encryptable = false;
-            if (fs_mgr_is_encryptable(v)) {
+            if (fs_mgr_is_encryptable(v) || fs_mgr_is_file_encrypted(v)) {
                 *encryptable = true;
                 char buffer[PROPERTY_VALUE_MAX+1];
                 if (property_get("ro.crypto.state", buffer, "") &&