Unit Tests for Security Patch Level

Merge of widevine change http://go/wvgerrit/16249

This CL adds unit tests and reference code for the security patch
level, which is a new feature in OEMCrypto v11.  This CL also adjusts
the dynamic and static adapters to still run with devices that have a
v10 OEMCrypto.

The level 3 haystack code will be updated in a future CL.

bug: 26188985

Change-Id: I518ef46b4098cf3718fe0c0390bfb6825db4fb6b

libwvdrmengine/oemcrypto/mock/src/oemcrypto_key_mock.cpp

@@ -17,7 +17,8 @@ namespace wvoec_mock {
 bool KeyControlBlock::Validate() {
   if (memcmp(verification_, "kctl", 4) &&  // original verification
       memcmp(verification_, "kc09", 4) &&  // add in version 9 api
-      memcmp(verification_, "kc10", 4)) {  // add in version 10 api
+      memcmp(verification_, "kc10", 4) &&  // add in version 10 api
+      memcmp(verification_, "kc11", 4)) {  // add in version 11 api
     LOGE("KCB: BAD verification string: %4.4s", verification_);
     valid_ = false;
   } else {
@@ -71,6 +72,9 @@ KeyControlBlock::KeyControlBlock(
     LOGD("  bits kControlKDCPVersion 0x%02x.",
          (control_bits() & kControlHDCPVersionMask)
          >> kControlHDCPVersionShift);
+    LOGD("  bits kControlSecurityPatchLevel 0x%02x.",
+         (control_bits() & kControlSecurityPatchLevelMask)
+         >> kControlSecurityPatchLevelShift);
     LOGD("  bit kControlAllowEncrypt %s.",
          (control_bits() & kControlAllowEncrypt) ? "set" : "unset");
     LOGD("  bit kControlAllowDecrypt %s.",