slimbus: slim-msm: Update QMI usage

The interface to QMI has changed considerably. Update the slimbus driver
to use the most recent QMI interface.

Change-Id: Ifcd7a942b27b3f6b6a34a01b02ed94b398fa96de
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@codeaurora.org>