ART: add kryo to a53 #835769 & #843419 erratum exception list

Kryo is custom-designed 64-bit ARM CPU and does not need this A53
erratum handling.

https://www.qualcomm.com/news/snapdragon/2015/09/02/snapdragon-820-and-kryo-cpu-heterogeneous-computing-and-role-custom

Change-Id: Id8f6c616ab2ed19056fd1e3829b85b94a6e6eb84
diff --git a/runtime/arch/arm64/instruction_set_features_arm64.cc b/runtime/arch/arm64/instruction_set_features_arm64.cc
index 395cee8..613bb5c 100644
--- a/runtime/arch/arm64/instruction_set_features_arm64.cc
+++ b/runtime/arch/arm64/instruction_set_features_arm64.cc
@@ -39,7 +39,7 @@
   if (!needs_a53_835769_fix) {
     // Check to see if this is an expected variant.
     static const char* arm64_known_variants[] = {
-        "denver64"
+        "denver64", "kryo"
     };
     if (!FindVariantInArray(arm64_known_variants, arraysize(arm64_known_variants), variant)) {
       std::ostringstream os;