devices: Fix coverity discovered 9/13/2017
devices: Fix coverity discovered 9/13/2017

Missing a break statement in the case

Change-Id: I1b1e198748343bc116ee0eaf9012abc3be15c40a
Signed-off-by: Steven <a748ea44ad7b179c2313a856d44e1e4eb39869bb@cisco.com>

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