Revert of CQ: Remove ARM64 trybots until toolchain issues are resolved.

infra/config/cq.cfg

Index: infra/config/cq.cfg
diff --git a/infra/config/cq.cfg b/infra/config/cq.cfg
index 95d70f28e9a5dcb5cfd0ca0d3ca17f88d547eeca..96a69bc867bea7479f4d98cbfeb04cd55acae913 100644
--- a/infra/config/cq.cfg
+++ b/infra/config/cq.cfg
@@ -46,9 +46,8 @@
       # TODO(kjellander): Add when bugs.webrtc.org/7090 is fixed.
       #builders { name: "linux32_arm_dbg" }
       builders { name: "linux32_arm_rel" }
-      # TODO(kjellander): Add back when bugs.webrtc.org/7024 is fixed.
-      #builders { name: "linux_arm64_dbg" }
-      #builders { name: "linux_arm64_rel" }
+      builders { name: "linux_arm64_dbg" }
+      builders { name: "linux_arm64_rel" }
       builders { name: "linux_asan" }
       builders { name: "linux_baremetal" }
       builders { name: "linux_compile_dbg" }