Please install device tree overlays

[Alistair Buxton]

Device tree overlays are required for correct functioning of add-on HATs. They should be installed into the FAT partition (/boot/firmware/overlays on Ubuntu) in a directory called "overlays". They are merged in to the main device tree by the broadcom firmware at boot-time according to settings in config.txt.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-raspi2 4.4.0.1017.17
ProcVersionSignature: User Name 4.4.0-1017.23-raspi2 4.4.13
Uname: Linux 4.4.0-1017-raspi2 armv7l
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: armhf
Date: Thu Jul 28 16:22:26 2016
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: linux-meta-raspi2
UpgradeStatus: No upgrade log present (probably fresh install)