Switch to rust_library

Test: mmm external/rust/crates
Change-Id: I2c5c1d2bb0422829effc1d95d65fa723c450b163
diff --git a/Android.bp b/Android.bp
index 112a76f..f165b53 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1,11 +1,11 @@
 // This file is generated by cargo2android.py.
 
-rust_library_rlib {
+rust_library {
     name: "libenv_logger",
     crate_name: "env_logger",
     srcs: ["src/lib.rs"],
     edition: "2018",
-    rlibs: [
+    rustlibs: [
         "liblog_rust",
     ],
 }