USB: ccid_bridge: Add support for USB smart card class

This module implements a bridge driver which allows user space
to communicate with USB smart card devices.  This module provides
/dev/ccid_bridge device file which allows read/write/ioctl methods.
The ioctls facilitate control and interrupt transfers.  The bulk
transfers are implemented via read and write.  The interrupt
endpoint is optional and not all devices may support it.

Change-Id: I67ac7c7d15fb65c8f6a2cc9f9c81343da074aab7
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>