armv6/v7:
See PR 222612

Add proper architecture name:
  https://gcc.gnu.org/ml/gcc-patches/2015-06/msg01679.html

--- Source/WTF/wtf/Platform.h.orig	2017-06-04 20:16:06 UTC
+++ Source/WTF/wtf/Platform.h
@@ -226,6 +226,7 @@
 #elif defined(__ARM_ARCH_6__) \
     || defined(__ARM_ARCH_6J__) \
     || defined(__ARM_ARCH_6K__) \
+    || defined(__ARM_ARCH_6KZ__) \
     || defined(__ARM_ARCH_6Z__) \
     || defined(__ARM_ARCH_6ZK__) \
     || defined(__ARM_ARCH_6T2__) \
@@ -272,6 +273,7 @@

 #elif defined(__ARM_ARCH_6J__) \
     || defined(__ARM_ARCH_6K__) \
+    || defined(__ARM_ARCH_6KZ__) \
     || defined(__ARM_ARCH_6Z__) \
     || defined(__ARM_ARCH_6ZK__) \
     || defined(__ARM_ARCH_6M__)