Update stub file for mips 64 build

Merge from widevine of http://go/wvgerrit/16363

Add temporary OEMCrypto API to the stub file used by android mips 64
devices.

bug: 26213020
Change-Id: I4b71fd21c5cf5dbb14645f606586af54d03ccaea

libwvdrmengine/level3/mips/level3_stubs.cpp

@@ -54,7 +54,7 @@ OEMCryptoResult Level3_LoadKeys(OEMCrypto_SESSION /*session*/,
                                 const uint8_t* /*enc_mac_key_iv*/,
                                 const uint8_t* /*enc_mac_key*/,
                                 size_t /*num_keys*/,
-                                const OEMCrypto_KeyObject* /*key_array*/,
+                                const OEMCrypto_KeyObject_V10* /*key_array*/,
                                 const uint8_t* /*pst*/,
                                 size_t /*pst_length*/) {
   return OEMCrypto_ERROR_NOT_IMPLEMENTED;