Merge "[MTE] add device config for permissive mode"

static bool is_permissive_mte() {

  // Environment variable for testing or local use from shell.

  char* permissive_env = getenv("MTE_PERMISSIVE");

  char process_sysprop_name[512];

  async_safe_format_buffer(process_sysprop_name, sizeof(process_sysprop_name),

                           "persist.device_config.memory_safety_native.permissive.process.%s",

                           getprogname());

  // DO NOT REPLACE this with GetBoolProperty. That uses std::string which allocates, so it is

  // not async-safe (and this functiong gets used in a signal handler).

  return property_parse_bool("persist.sys.mte.permissive") ||

         property_parse_bool("persist.device_config.memory_safety_native.permissive.default") ||

         property_parse_bool(process_sysprop_name) ||

         (permissive_env && ParseBool(permissive_env) == ParseBoolResult::kTrue);

}