[idsig] Simplify building V4Signature from idsig

Bug: 248999133
Test: libidsig.test apkdmverity.test microdroid_manager_test
Change-Id: I383a2f9827d1c292e2a2afec1e2092f60728267f
diff --git a/apkdmverity/Android.bp b/apkdmverity/Android.bp
index 97a6174..51ef4dd 100644
--- a/apkdmverity/Android.bp
+++ b/apkdmverity/Android.bp
@@ -43,4 +43,8 @@
     rustlibs: [
         "libtempfile",
     ],
+    data: [
+        "testdata/*.apk",
+        "testdata/*.idsig",
+    ],
 }