Use default module name 'liblibc'

Test: mm all rust projects
Change-Id: I153ac7bb1dc9cc8fdcae4fa9ee2ddf0fdaa3ad9a
diff --git a/Android.bp b/Android.bp
index 4737980..48cce16 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1,8 +1,7 @@
 // This file is generated by cargo2android.py.
 
 rust_library_rlib {
-    name: "libc_rust",
-    stem: "liblibc",
+    name: "liblibc",
     host_supported: true,
     crate_name: "libc",
     srcs: ["src/lib.rs"],