nrf
commit ecf5d334f1577cc7fca11ae7b5a7fb86f0ea757a (HEAD -> master, origin/master)
Author: Jun Qing Zou <jun.qing.zou@nordicsemi.no>
Date:   Tue Sep 8 12:30:34 2020 +0900

    applications: serial_lte_modem Adjust flow control for UART2

    After recent up-merge, UART flow control moves to device tree.
    And Zephyr Serial's KConfig item is also removed.

    Signed-off-by: Jun Qing Zou <jun.qing.zou@nordicsemi.no>

zephyr
commit 7d20f2ebf25991b2897b91275939f8d16d38513a (HEAD, manifest-rev)
Author: Peter Bigot <peter.bigot@nordicsemi.no>
Date:   Thu Sep 3 14:30:04 2020 -0500

    [nrf fromtree] kernel/timeout: revert to signed dticks for timeout storage

    The fix to handle long duration timeouts in 150e18de6e1806942 also
    changed the duration value from signed to unsigned.  This can cause
    delays in processing alarms when timer handlers run longer than a tick
    (either due to delays or if there are many of them).  Revert to a
    signed representation.

    Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>