[sis190] Insert forgotten FILE_LICENCE() to sis190.h

Signed-off-by: Michael Brown <mcb30@etherboot.org>
Modified-by: Michael Brown <mcb30@etherboot.org>

src/drivers/net/sis190.h

-
 #ifndef __SIS190_H__
 #define __SIS190_H__
 
+FILE_LICENCE ( GPL_ANY );
+
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>