apps.intel_mp.intel_mp: fix device unbinding for Intel driver
apps.intel_mp.intel_mp: fix device unbinding for Intel driver

Make sure the device is unbound before map_pci_address() is
called. Needs to be done more properly.

eugeneia/snabb,snabbco/snabb,eugeneia/snabb,snabbco/snabb,snabbco/snabb,snabbco/snabb,eugeneia/snabb,eugeneia/snabb,eugeneia/snabb,snabbco/snabb,eugeneia/snabb,eugeneia/snabb,snabbco/snabb,eugeneia/snabb,snabbco/snabb,snabbco/snabb