libmp4extractor: Add host support

Test: Build libmp4extractor
Bug: 151789258

Change-Id: I07e1dd05f9f38354ecfed269a798eb4013ba7cfa
diff --git a/media/extractors/mp4/Android.bp b/media/extractors/mp4/Android.bp
index e48e1b7..afa055f 100644
--- a/media/extractors/mp4/Android.bp
+++ b/media/extractors/mp4/Android.bp
@@ -16,4 +16,12 @@
         "libstagefright_id3",
         "libutils",
     ],
+
+    host_supported: true,
+
+    target: {
+        darwin: {
+            enabled: false,
+        },
+    },
 }