qboot: enable mmconfig

Need to enable mmconfig in qboot and also need to reserve
mmconfig space in bios.

Signed-off-by: Yang Zhong <yang.zhong@intel.com>
Message-Id: <1490869973-4562-1-git-send-email-yang.zhong@intel.com>
[Do not affect e820 memory map on i440FX chipset. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
4 files changed