Update to spice2x-25-04-25 (pre-apply)

> broken commit

external/cpu_features/src/copy.inl

@@ -0,0 +1,19 @@
+// Copyright 2021 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <stddef.h>
+
+static void copy(char *__restrict dst, const char *src, size_t count) {
+  for (size_t i = 0; i < count; ++i) dst[i] = src[i];
+}