Set dist_group: "android" for frameworks/base java_sdk_libraries

dist_group replaces owner and the default is going to change, set it
to the current default "android" for frameworks/base java_sdk_libraries.

Bug: 186723288
Test: m checkbuild
Change-Id: I1526853951bcffbe5c5aec6fbc6ba8e0dbea95ad
diff --git a/obex/Android.bp b/obex/Android.bp
index 95eac81..37e7f76 100644
--- a/obex/Android.bp
+++ b/obex/Android.bp
@@ -48,4 +48,5 @@
     name: "javax.obex",
     srcs: ["javax/**/*.java"],
     api_packages: ["javax.obex"],
+    dist_group: "android",
 }