1.8.0-dev fails to build on raspberry pi (arm7l // armhf)

[vbatts]

Discovered on commit c19a00d

$ uname -a
Linux midnight 3.18.11-v7+ #781 SMP PREEMPT Tue Apr 21 18:07:59 BST 2015 armv7l GNU/Linux

The current version of seccomp in libcontainer only has amd64 specific code.

pi@midnight ~/src/docker $ AUTO_GOPATH=1 ./hack/make.sh dynbinary
# WARNING! I don't seem to be running in the Docker container.
# The result of this command might be an incorrect build, and will not be
#   officially supported.
#
# Try this instead: make all
#

bundles/1.8.0-dev already exists. Removing.

---> Making bundle: dynbinary (in bundles/1.8.0-dev/dynbinary)
# github.com/opencontainers/runc/libcontainer/seccomp
vendor/src/github.com/opencontainers/runc/libcontainer/seccomp/filter.go:93: undefined: jumpEqualTo
vendor/src/github.com/opencontainers/runc/libcontainer/seccomp/filter.go:95: undefined: jumpNotEqualTo
vendor/src/github.com/opencontainers/runc/libcontainer/seccomp/filter.go:97: undefined: jumpGreaterThan
vendor/src/github.com/opencontainers/runc/libcontainer/seccomp/filter.go:99: undefined: jumpLessThan
vendor/src/github.com/opencontainers/runc/libcontainer/seccomp/filter.go:101: undefined: jumpMaskEqualTo

cc @crosbymichael

[vbatts]

duplicate of #15053