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>

include/openssl/cipher.h

diff --git a/include/openssl/cipher.h b/include/openssl/cipher.h
index b8d7a27..7c38a20 100644
--- a/include/openssl/cipher.h
+++ b/include/openssl/cipher.h
@@ -76,6 +76,7 @@
 
 OPENSSL_EXPORT const EVP_CIPHER *EVP_des_cbc(void);
 OPENSSL_EXPORT const EVP_CIPHER *EVP_des_ecb(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_des_ede_cbc(void);
 OPENSSL_EXPORT const EVP_CIPHER *EVP_des_ede3_cbc(void);
 
 OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_128_ecb(void);