Update submodule nuttx to latest Sat Sep 26 15:30:26 UTC 2020

- nuttx in PX4/Firmware (59f5b841a6646a7ae514ae1139ba18c3f787ceb3): a8b7ca869e
    - nuttx current upstream: 0fe69f6cc0
    - Changes: a8b7ca869e...0fe69f6cc0

    0fe69f6cc0 2020-09-25 David Sidrane - [BACKPORT] stm32f7:serial Bug Fix: Ensure next buffer is processed
This commit is contained in:
PX4 BuildBot
2020-09-26 15:30:26 +00:00
committed by David Sidrane
parent a24488328f
commit b5df4f76cc