Do not embed IPXE into Rombios anymore. Instead, it is loaded by the
toolstack from a file as a separate module.
Ability to let user specify an IPXE blob will come later.
No user visible change.
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Jan Beulich <jbeulich@suse.com>