staging: usbip: add userspace code

Add userspace code from svn trunk revision 175. Located at
https://usbip.svn.sourceforge.net/svnroot/usbip/linux/trunk/src.

Signed-off-by: matt mooney <mfm@muteddisk.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
32 files changed