ACK: [SRU][Trusty][Bionic][PATCH 1/1] proc: restrict kernel stack dumps to root

[Po-Hsu Lin]

Backport looks ok with changes limited to the original patch.
Test build OK.

I think we don't have a convention to keep an empty line before (backport ...),
don't we?

https://wiki.ubuntu.com/Kernel/Dev/StablePatchFormat

Acked-by: Po-Hsu Lin <po-hsu.lin at canonical.com>