deps: migen: fix upstream ref

Signed-off-by: Sean Cross <sean@xobs.io>
This commit is contained in:
2019-02-25 16:36:21 +08:00
parent 05480670c5
commit dd7839cc68

2
deps/migen vendored

Submodule deps/migen updated: 867adbf5a2...ae421054f1