NimBLE: update nimble submodule

- Update submodule to fix https://jira.espressif.com:8443/browse/BT-192.
- Upstream PR: https://github.com/apache/mynewt-nimble/pull/427
This commit is contained in:
Prasad Alatkar
2019-07-02 11:26:24 +08:00
committed by Angus Gratton
parent 55b823cd13
commit 396258380a