staging: usbip: userspace: libsrc: (foo*) should be (foo *)

This patch fixes the following checkpatch error:
-ERROR: "(foo*)" should be "(foo *)"

Signed-off-by: Kurt Kanzenbach <ly80toro@cip.cs.fau.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>