write params in initData as Data

cereal

@@ -1 +1 @@
-Subproject commit c097236056e38c5824dc43fbc90f74c04b9953dd
+Subproject commit 1915d60125a27296b49e18179c8a1c4bca552c72

selfdrive/loggerd/logger.cc

@@ -111,7 +111,7 @@ kj::Array<capnp::word> logger_build_init_data() {
     for (auto& kv : params_map) {
       auto lentry = lparams[i];
       lentry.setKey(kv.first);
-      lentry.setValue(kv.second);
+      lentry.setValue(capnp::Data::Reader((const kj::byte*)kv.second.data(), kv.second.size()));
       i++;
     }
   }