Switch to rust_library

Test: mmm external/rust/crates
Change-Id: Ia5d364a561dac715d02e8acce25a0c4cb33f694c
diff --git a/Android.bp b/Android.bp
index f44856c..4e3d8df 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1,6 +1,6 @@
 // This file is generated by cargo2android.py.
 
-rust_library_rlib {
+rust_library {
     name: "libandroid_log_sys",
     crate_name: "android_log_sys",
     srcs: ["src/lib.rs"],