layers/poky: Update to yocto-2.4.3
layers/poky: Update to yocto-2.4.3

Patch-type: patch
Changelog-entry: Update poky submodule to yocto-2.4.3
Signed-off-by: Andrei Gherzan <8dc7c09356db0b1762fb140617d7375c0a5a4131@resin.io>

resin-os/resin-intel