staging: usbip: Add header guards to stub.h and vhci.h

stub.h and vhci.h are missing proper #ifndef/#define header guards, so
add them.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2 files changed