Re-add |EVP_des_ede_cbc|.

Note that while |DES_ede2_cbc_encrypt| exists, I didn't use it: I
think it's easier to see what's happening this way.

(I couldn't find an authoritative source of test data, including in
OpenSSL's source, so I used OpenSSL's implementation to produce the
test ciphertext.)

This benefits globalplatform.

Change-Id: I7e17ca0b69067d7b3f4bc213b4616eb269882ae0
Reviewed-on: https://boringssl-review.googlesource.com/5724
Reviewed-by: Adam Langley <agl@google.com>