Staging: xgifb: Remove port macros in osdef.h

The port related macros in osdef.h are replaced with calls to out?()
and in?().  This removes the last macros defined in osdef.h, so this
file is no longer needed.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Arnaud Patard <apatard@mandriva.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>