net: qrtr: Change the in and out channels

MHI's IN channel is QRTR's OUT channel and vice-versa.

commit net: qrtr: Change the in and out channels
(5c9c165066de0).

Change-Id: If16790e629263cfa2787a08326c079b58f42617b
Signed-off-by: Chris Lew <clew@codeaurora.org>
Signed-off-by: Manoharan Vijaya Raghavan <mraghava@codeaurora.org>