FM: Break bootclasspath dependency

Use the library directly instead of forcing its global inclusion

Change-Id: I547c85b1b6c4ce09333e2eac2059cca1b851a346
diff --git a/fmapp2/Android.bp b/fmapp2/Android.bp
index a2ef6ab..52361a9 100755
--- a/fmapp2/Android.bp
+++ b/fmapp2/Android.bp
@@ -10,4 +10,5 @@
     platform_apis: true,
     aaptflags: ["--legacy"],
     system_ext_specific: true,
+    required: ["qcom.fmradio.xml"],
 }