These unused portions trigger a compiler warning under gcc 4.6, due to
the ambiguity over the "page" field in struct igbvf_buffer.

Reported-by: Ralph Giles <giles@thaumas.net>
Tested-by: Ralph Giles <giles@thaumas.net>
Signed-off-by: Michael Brown <mcb30@ipxe.org>

Driver for Intel 82576 based virtual functions, based on Intel source
code available at:

    http://sourceforge.net/projects/e1000  (igbvf-1.0.7)

Based on initial port from Eric Keller <ekeller@princeton.edu>.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>