usb: gadget: qdss: Add support for HSIC transport

This is a new feature to support qdss by using HSIC
transport since previous version only support BAM transport
way. Add a new data struct to support multiple transports.
To save number of resources add debug flag to enable or
disable debug interface.

Change-Id: Ia5401631b2145aaf907d2cdad25d42d22f678349
Signed-off-by: Guang Jian Zeng <gzeng@codeaurora.org>