Update OPK v18 documentation

Merge from Widevine repo of http://go/wvgerrit/169050

- Update changelog
- Update copy parter files script to include linux port
- Update opk_partner_test script (used to make sure everything works out
  of the box) with third party dependencies, refactored downloads into
  a public setup.sh script
- Remove WTPI_BUILD_INFO from OPK makefiles and gyp files, since it is
  no longer needed
- Remove FILES.md since it is out of date and ree-sources.mk and
  tee-sources.mk satisfy the same purpose
- Add debug flag in comments for OP-TEE and Linux ports. As a hint for
  how to enable debug in OPK
- Remove oemcrypto_build_info.h since it is no longer needed. Move the
  XSTR macro it contained to oemcrypto_api_macros.h
- Add provisioning method macro to OPTEE and Linux build files to hint
  at how to build Prov 2 and Prov 4 using the same build files but
  different build-time values.

Merged from https://widevine-internal-review.googlesource.com/166219

Bug: 275264353
Test: luci tests
Change-Id: I220e3296f631d895a7c4504454635fe396efc0a4

libwvdrmengine/oemcrypto/test/GEN_api_lock_file.c

@@ -304,3 +304,65 @@ OEMCryptoResult _oecc120(OEMCrypto_SESSION session, const uint8_t* message,
 // OEMCrypto_GetOEMKeyToken defined in v17.2
 OEMCryptoResult _oecc130(OEMCrypto_SESSION key_session, uint8_t* key_token,
                          size_t* key_token_length);
+
+// OEMCrypto_SetMaxAPIVersion defined in v18.1
+OEMCryptoResult _oecc132(uint32_t max_version);
+
+// OEMCrypto_GetKeyHandle defined in v18.1
+OEMCryptoResult _oecc133(OEMCrypto_SESSION session,
+                         const uint8_t* content_key_id,
+                         size_t content_key_id_length,
+                         OEMCryptoCipherMode cipher_mode, uint8_t* key_handle,
+                         size_t* key_handle_length);
+
+// OEMCrypto_DecryptCENC defined in v18.1
+OEMCryptoResult _oecc134(
+    const uint8_t* key_handle, size_t key_handle_length,
+    const OEMCrypto_SampleDescription* samples,  // an array of samples.
+    size_t samples_length,                       // the number of samples.
+    const OEMCrypto_CENCEncryptPatternDesc* pattern);
+
+// OEMCrypto_Generic_Encrypt defined in v18.1
+OEMCryptoResult _oecc135(const uint8_t* key_handle, size_t key_handle_length,
+                         const OEMCrypto_SharedMemory* in_buffer,
+                         size_t in_buffer_length, const uint8_t* iv,
+                         OEMCrypto_Algorithm algorithm,
+                         OEMCrypto_SharedMemory* out_buffer);
+
+// OEMCrypto_Generic_Decrypt defined in v18.1
+OEMCryptoResult _oecc136(const uint8_t* key_handle, size_t key_handle_length,
+                         const OEMCrypto_SharedMemory* in_buffer,
+                         size_t in_buffer_length, const uint8_t* iv,
+                         OEMCrypto_Algorithm algorithm,
+                         OEMCrypto_SharedMemory* out_buffer);
+
+// OEMCrypto_Generic_Sign defined in v18.1
+OEMCryptoResult _oecc137(const uint8_t* key_handle, size_t key_handle_length,
+                         const OEMCrypto_SharedMemory* buffer,
+                         size_t buffer_length, OEMCrypto_Algorithm algorithm,
+                         OEMCrypto_SharedMemory* signature,
+                         size_t* signature_length);
+
+// OEMCrypto_Generic_Verify defined in v18.1
+OEMCryptoResult _oecc138(const uint8_t* key_handle, size_t key_handle_length,
+                         const OEMCrypto_SharedMemory* buffer,
+                         size_t buffer_length, OEMCrypto_Algorithm algorithm,
+                         const OEMCrypto_SharedMemory* signature,
+                         size_t signature_length);
+
+// OEMCrypto_GetSignatureHashAlgorithm defined in v18.1
+OEMCryptoResult _oecc139(OEMCrypto_SESSION session,
+                         OEMCrypto_SignatureHashAlgorithm* algorithm);
+
+// OEMCrypto_GetDeviceInformation defined in v18.1
+OEMCryptoResult _oecc131(uint8_t* device_info, size_t* device_info_length);
+
+// OEMCrypto_GetDeviceSignedCsrPayload defined in v18.1
+OEMCryptoResult _oecc141(const uint8_t* challenge, size_t challenge_length,
+                         const uint8_t* encoded_device_info,
+                         size_t encoded_device_info_length,
+                         uint8_t* signed_csr_payload,
+                         size_t* signed_csr_payload_length);
+
+// OEMCrypto_EnterTestMode defined in v18.1
+OEMCryptoResult _oecc140(void);