[ANativeWindow] Add ANativeWindow_allocateBuffers stable abi.

Bug: 137012798
Test: builds
Change-Id: Ibe2afe83d48adb583bfbda088376fcf402050814
diff --git a/libs/gui/Surface.cpp b/libs/gui/Surface.cpp
index e7880eb..23532e7 100644
--- a/libs/gui/Surface.cpp
+++ b/libs/gui/Surface.cpp
@@ -1176,6 +1176,10 @@
     case NATIVE_WINDOW_SET_QUEUE_INTERCEPTOR:
         res = dispatchAddQueueInterceptor(args);
         break;
+    case NATIVE_WINDOW_ALLOCATE_BUFFERS:
+        allocateBuffers();
+        res = NO_ERROR;
+        break;
     default:
         res = NAME_NOT_FOUND;
         break;