Disable libabigail for darwin.

Test: treehugger
Bug: 177612779
Change-Id: I234cde759f5008d0ff52232c71896c5ca2737fd4
diff --git a/Android.bp b/Android.bp
index b5aa19f..e3fa6f6 100644
--- a/Android.bp
+++ b/Android.bp
@@ -40,6 +40,11 @@
         "//visibility:private",
     ],
     compile_multilib: "64",
+    target: {
+        darwin: {
+            enabled: false,
+        },
+    },
 }
 
 cc_library_host_static {