diag: Initialize Diag userspace client DCI masks on startup

Currently, when a diag userspace client app starts up, the
Diag kernel driver will update the app with the message, log
and event masks. However, the DCI log and event masks are not
updated in the app on startup. Make changes to ensure the DCI
log and event masks are updated in the app on startup.

Change-Id: I0ab6cf466c641b5e868024027d9d1c84474bd41f
Signed-off-by: Dixon Peterson <dixonp@codeaurora.org>