Normally only useful for our HttpBootDxe, which supports HTTP
boot from static IP address as long as URI is also pre-specified.
The NVRAM setting should affect normal EDK II derived network stacks
and will configure a static IP on the card, but this will later be
ignored and overridden by DHCP when PXE or HTTP boot is started in the
standard network stack.
Signed-off-by: Mike Beaton <mjsbeaton@gmail.com>
