build(deps): bump litex/deps/migen from 40b1092 to aac40f7 (#434)

Bumps [litex/deps/migen](https://github.com/m-labs/migen) from `40b1092` to `aac40f7`.
- [Release notes](https://github.com/m-labs/migen/releases)
- [Commits](40b1092a05...aac40f7ed4)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>
This commit is contained in:
dependabot-preview[bot] 2021-02-08 08:42:11 +01:00 committed by GitHub
parent 99421ef8ef
commit 1de5e4c6fe
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@ -1 +1 @@
Subproject commit 40b1092a05ec7659c42c8087b0c229dcfb5d9ca1
Subproject commit aac40f7ed42dc438e75fcee56e35cef597869ac9