Make ANativeWindow available over stable AIDL

Bug: 251850069
Test: m
Change-Id: Ia47a5c6a83a7c51b4034c901f6ffc9813d3a6eb3
diff --git a/libs/nativewindow/libnativewindow.map.txt b/libs/nativewindow/libnativewindow.map.txt
index ce108b6..76d23fa 100644
--- a/libs/nativewindow/libnativewindow.map.txt
+++ b/libs/nativewindow/libnativewindow.map.txt
@@ -57,6 +57,8 @@
     ANativeWindow_setUsage; # llndk
     ANativeWindow_tryAllocateBuffers; # introduced=30
     ANativeWindow_unlockAndPost;
+    ANativeWindow_readFromParcel; # introduced=UpsideDownCake
+    ANativeWindow_writeToParcel; # introduced=UpsideDownCake
   local:
     *;
 };