usb: gadget: Add snapshot of u_bam and u_bam_data

The u_bam_data module is used as an interface between several
of the gadget function drivers (RNDIS, MBIM, ECM) and the
USB BAM driver.

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>