Enable AutoFDO for libminikin

This allows compiler to perform better optimization using profiles
gathered from users.

Test: presubmit
Bug: 175205560
Change-Id: Ia2235a807f9772d7e73eca14ee6b6ca1de9f213b
diff --git a/libs/minikin/Android.bp b/libs/minikin/Android.bp
index d23f053..1d74dd9 100644
--- a/libs/minikin/Android.bp
+++ b/libs/minikin/Android.bp
@@ -114,4 +114,6 @@
             ],
         },
     },
+
+    afdo: true,
 }