kvm tools: Bring mptables back in case if no firmware used

In case if no firmware used we should put mptables
at repdefined address thus kernel scanner will recognized
it.

For this make a distinction between firmware address
and own bios address.

Reported-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>