libamrextractor: Add host support

Test: Build libamrextractor
Bug: 151789291

Change-Id: I8bb5b26c88838273a7aec8e715750001004aa8b5
diff --git a/media/extractors/amr/Android.bp b/media/extractors/amr/Android.bp
index 49c9567..440065f 100644
--- a/media/extractors/amr/Android.bp
+++ b/media/extractors/amr/Android.bp
@@ -8,4 +8,10 @@
         "libstagefright_foundation",
     ],
 
+    host_supported: true,
+    target: {
+        darwin: {
+            enabled: false,
+        },
+    }
 }