Update decrypt for 4.4

Change-Id: I8d5d7b6a49890e4707d70de8b429563de0d2ad99
diff --git a/crypto/scrypt/patches/README b/crypto/scrypt/patches/README
new file mode 100644
index 0000000..353ddbb
--- /dev/null
+++ b/crypto/scrypt/patches/README
@@ -0,0 +1,11 @@
+bionic.patch:
+
+Allows scrypt to compile against bionic.
+
+use_openssl_pbkdf2.patch:
+
+Uses the PBKDF2 function from OpenSSL (it uses accelerated SHA256)
+
+arm-neon.patch:
+
+Adds NEON acceleration for the Salsa20/8 mixing function.