memif: API message handler registration bug-fix
memif: API message handler registration bug-fix

- removed memif details message from memif API

Change-Id: I21185e7678f375cc10639cdbc3ad2fd84bc95459
Signed-off-by: Jakub Grajciar <28ba55a1b7e46bb4f06e4fcff41cc2eab735bbe1@gmail.com>

chrisy/vpp,vpp-dev/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp,vpp-dev/vpp,chrisy/vpp,vpp-dev/vpp,FDio/vpp,chrisy/vpp,FDio/vpp,vpp-dev/vpp,FDio/vpp,FDio/vpp,vpp-dev/vpp,chrisy/vpp,FDio/vpp,vpp-dev/vpp,FDio/vpp,chrisy/vpp,vpp-dev/vpp