usb: gadget: Add snapshot of RMNET and QDSS function drivers

Add function drivers supporting RMNET and QDSS over USB peripheral.
This includes the HSIC, SMD, BAM transport functions as well as
changes to android.c to invoke them.

This snapshot is taken as of msm-3.14 commit 3bc54cf86b (Merge "msm:
camera: Add dummy sub module in sensor pipeline")

Signed-off-by: Jack Pham <jackp@codeaurora.org>