Initially driver was displayed but after I shut the interface and whitelisted 
them under DPDK in '/etc/vpp/startup.conf' it ended up in <NONE> state.

I have restarted ubuntu and now driver is shown as expected. But interfaces are 
still not detected by VPP.  I did restart of VPP but no luck

$ sudo vppctl show pci
Address      Sock VID:PID     Link Speed    Driver          Product Name        
            Vital Product Data
0000:3b:00.0   0  8086:1563   8.0 GT/s x4   ixgbe           Cisco  X550-TX 10 
Gig            PN: X550-TX
V0: 0x 4d 41 50 20 32 2e 37 30 ...
MN: 7
RV: 0x 69
0000:3b:00.1   0  8086:1563   8.0 GT/s x4   ixgbe           Cisco  X550-TX 10 
Gig            PN: X550-TX
V0: 0x 4d 41 50 20 32 2e 37 30 ...
MN: 7
RV: 0x 69
0000:5e:00.0   0  8086:1583   8.0 GT/s x8   i40e            Cisco(R) Ethernet 
Converged NIC  PN: XL710-QDA2
V0: 0x 4d 41 50 20 35 2e 31 36 ...
MN: 1137
RV: 0x f2
0000:5e:00.1   0  8086:1583   8.0 GT/s x8   i40e            Cisco(R) Ethernet 
Converged NIC  PN: XL710-QDA2
V0: 0x 4d 41 50 20 35 2e 31 36 ...
MN: 1137
RV: 0x f2
0000:d8:00.0   1  8086:1583   8.0 GT/s x8   i40e            Cisco(R) Ethernet 
Converged NIC  PN: XL710-QDA2
V0: 0x 4d 41 50 20 35 2e 31 36 ...
MN: 1137
RV: 0x f2
0000:d8:00.1   1  8086:1583   8.0 GT/s x8   i40e            Cisco(R) Ethernet 
Converged NIC  PN: XL710-QDA2
V0: 0x 4d 41 50 20 35 2e 31 36 ...
MN: 1137
RV: 0x f2

$ cat /etc/vpp/startup.conf
dpdk {
dev 0000:d8:00.0
}

After I shut the interface and add PCI address under DPDK ad above the driver 
is shown as <NONE>

$ sudo vppctl show pci
Address      Sock VID:PID     Link Speed    Driver          Product Name        
            Vital Product Data

0000:d8:00.0   1  8086:1583   8.0 GT/s x8   <NONE>          Cisco(R) Ethernet 
Converged NIC  PN: XL710-QDA2
V0: 0x 4d 41 50 20 35 2e 31 36 ...
MN: 1137
RV: 0x f2

$ sudo vppctl show int
Name               Idx    State  MTU (L3/IP4/IP6/MPLS)     Counter          
Count
local0                            0     down          0/0/0/0
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