Fix errors for external_updater.

* Unrecognized field name in METADATA kills external_updater.
  It is moved to README.android.
* Local patch for src/lib.rs is omitted, assuming that the
  change will be in the next release.
* The following update command test if the next update
  will preserve required local changes:
    updater.sh update --refresh --keep_date rust/crates/vsock

Test: make
Test: tools/external_updater/updater.sh update --refresh --keep_date rust/crates/vsock
Change-Id: I39f61c37bcc25009b078b62d01057aad80f00ad9

3 files changed, 5 insertions, 3 deletions

diff --git a/Android.bp b/Android.bp
index 5c792d9..f0e343a 100644
--- a/Android.bp
+++ b/Android.bp
@@ -15,6 +15,6 @@ rust_library {
 // dependent_library ["feature_list"]
 //   bitflags-1.2.1 "default"
 //   cfg-if-0.1.10
-//   libc-0.2.77 "default,extra_traits,std"
+//   libc-0.2.80 "default,extra_traits,std"
 //   nix-0.17.0
 //   void-1.0.2 "default,std"
diff --git a/METADATA b/METADATA
index be7a313..4e64bdb 100644
--- a/METADATA
+++ b/METADATA
@@ -1,5 +1,5 @@
 name: "vsock"
-description: "Vsock support for Rust."
+description: "Virtio socket support for Rust"
 third_party {
   url {
     type: HOMEPAGE
@@ -16,5 +16,4 @@ third_party {
     month: 9
     day: 28
   }
-  local_modifications: "Cherry-picked https://github.com/qwandor/vsock-rs/commit/4f73c26fc9a95e36e3ac4d304a02b6a424d7bcfd to fix Android build. This should be included in the next upstream release."
 }
diff --git a/README.android b/README.android
new file mode 100644
index 0000000..2ca244b
--- /dev/null
+++ b/README.android
@@ -0,0 +1,3 @@
+local_modifications:
+  "Cherry-picked https://github.com/qwandor/vsock-rs/commit/4f73c26fc9a95e36e3ac4d304a02b6a424d7bcfd to fix Android build. This should be included in the next upstream release."
+  See patches/src.lib.diff