usb: rmnet : Add support for QTI transport

Add support for USB-QTI(Qualcomm Tethering Interface)
interface through a user space device file mechanism. QTI
can now read and write QMI control packets from user space.

Change-Id: I199bcc8943576566b0b7a9589d248e04273e88da
Signed-off-by: Bar Weiner <bweiner@codeaurora.org>
6 files changed