Share srcs in rust_defaults

Test: atest -c --include-subdirs external/rust/crates
Change-Id: I4a4d921b1608078723bf60a5024d429fd2c48126
diff --git a/Android.bp b/Android.bp
index 06b0a13..5a1adfe 100644
--- a/Android.bp
+++ b/Android.bp
@@ -16,6 +16,8 @@
 rust_defaults {
     name: "ppv-lite86_defaults",
     crate_name: "ppv_lite86",
+    // has rustc warnings
+    srcs: ["src/lib.rs"],
     test_suites: ["general-tests"],
     auto_gen_config: true,
     edition: "2018",
@@ -28,13 +30,9 @@
 rust_test_host {
     name: "ppv-lite86_host_test_src_lib",
     defaults: ["ppv-lite86_defaults"],
-    // has rustc warnings
-    srcs: ["src/lib.rs"],
 }
 
 rust_test {
     name: "ppv-lite86_device_test_src_lib",
     defaults: ["ppv-lite86_defaults"],
-    // has rustc warnings
-    srcs: ["src/lib.rs"],
 }