Use a single socket to communicate with supplicant

This helps to prepare for future updates from external sources.

Bug: 9298955

Change-Id: I4c63ad5fc1ea3564aab38cfce955de19bad75c0c
(cherry picked from commit fb40801ed8c217ae01082fb1cbd0c30bbf5532ac)
1 file changed
tree: cb3ea00f35f93cbab3af7fb76003aa956205d13a
  1. core/
  2. services/