qbt_handler: Make the qbt driver as DLKM for GKI

Add changes to make qbt_handler as DLKM for GKI

Change-Id: I0f4908c01715847aebfc2e440f90b84a16410b1e
Signed-off-by: Rakesh Pallerla <rakeshp@qti.qualcomm.com>
Signed-off-by: Abir Ghosh <abirg@codeaurora.org>