Update Android.bp by running cargo_embargo am: 268ecb922d am: ddad61bfa9

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/async-stream/+/3079818

Change-Id: I86433403b14743e80f672b03c021f5771a5c0174
Signed-off-by: Automerger Merge Worker <[email protected]>
diff --git a/Android.bp b/Android.bp
index 51e6273..88a8277 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1,5 +1,7 @@
 // This file is generated by cargo_embargo.
-// Do not modify this file as changes will be overridden on upgrade.
+// Do not modify this file after the first "rust_*" or "genrule" module
+// because the changes will be overridden on upgrade.
+// Content before the first "rust_*" or "genrule" module is preserved.
 
 package {
     default_applicable_licenses: ["external_rust_crates_async-stream_license"],