aio: Introduce aio_context_setup

This is the place to initialize platform specific bits of AioContext.

Signed-off-by: Fam Zheng <famz@redhat.com>
Message-id: 1446177989-6702-3-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
diff --git a/aio-win32.c b/aio-win32.c
index 43c4c79..cdc4456 100644
--- a/aio-win32.c
+++ b/aio-win32.c
@@ -369,3 +369,7 @@
     aio_context_release(ctx);
     return progress;
 }
+
+void aio_context_setup(AioContext *ctx, Error **errp)
+{
+}