usb: qcserial: refactor device layout selection
usb: qcserial: refactor device layout selection

Preparing for more supported standard device layouts. Keeping
the matching macros unchanged to avoid breaking stable
backporting of new device additions.

Signed-off-by: Bjørn Mork <8a2957e0063f2abf61bd145b6236a74a3708ac54@mork.no>
Signed-off-by: Johan Hovold <6a430eed381e126d51a8cce8db662f765ce314bc@gmail.com>
Signed-off-by: Greg Kroah-Hartman <4645f7897fd33786a2ee1264d590b3c400559d85@linuxfoundation.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs