layers.txt: update for daisy release

* it will be updated to track master again after we switch official builds
  from dora to daisy (or when we have more master-specific changes to test)

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
layers: fix oe-core branch name

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
layers.txt: use jansa/master branches for layers

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>