diag: Add support for QSC restart

Add cleanup of SMUX port once disconnect event is
received by diagfwd driver.

CRs-Fixed: 376401
Change-Id: I5ef07c8ccbfcc4ad6c5e41b3d985bdea434ab9ce
Signed-off-by: Ashay Jaiswal <ashayj@codeaurora.org>
3 files changed