APPLIED[Unstable]: [SRU][X,B,D,E] update ENA driver for DIMLIB

[Seth Forshee]

On Tue, Nov 19, 2019 at 10:44:50AM -0800, Kamal Mostafa wrote:
> BugLink: https://bugs.launchpad.net/bugs/1853180
> 
> Update the Amazon ENA driver to latest mainline version with dynamic
> interrupt moderation supplied by DIMLIB, plus a couple of pending fixes
> from the netdev mailing list.
> 
> Note: For {Xenial,Bionic,Disco}, this needs bug 1852637
>     https://bugs.launchpad.net/bugs/1852637
>     ("backport DIMLIB (lib/dim/) to pre-5.2 kernels")
> as a prerequisite.

Applied only the last two patches from the eoan pull request to
unstable/master. Thanks!