DO NOT MERGE : Add simple control request handling

Control request handling was already added in master,
but it is causing a few problems on Windows. This patch
simplifies the main patch and only responds to get
status requests with STATUS_OK. This fixes situations
where Windows stops communicating if it doesn't get a
response from this request.

Bug: 65423303
Test: Transfer files on windows
Change-Id: Ib7a53aa5b679f011b3a8ac6dff549ca051d579e0