interface: fix interface rx mode config API
interface: fix interface rx mode config API

Swap byte order for fields of type vl_api_rx_mode_t.

Ticket: VPP-1871
Type: fix

Signed-off-by: Jakub Grajciar <80f619e109c6efd382b3a6accd36cbd33d9669a2@cisco.com>
Change-Id: Ia1745257b57209d41661d38067e0dd7618f9a9b9
Signed-off-by: Jakub Grajciar <80f619e109c6efd382b3a6accd36cbd33d9669a2@cisco.com>
(cherry picked from commit aefcd1a3579ec2c93f606b151d563d87ea211387)

FDio/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,chrisy/vpp