classes: Update overlayfs classes to use new bitbake functionality

OverlayFS classes belong to a recipe scope

Signed-off-by: Vyacheslav Yurkov <v.yurkov@precitec.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/meta/classes/overlayfs-etc.bbclass b/meta/classes-recipe/overlayfs-etc.bbclass
similarity index 100%
rename from meta/classes/overlayfs-etc.bbclass
rename to meta/classes-recipe/overlayfs-etc.bbclass

diff --git a/meta/classes/overlayfs.bbclass b/meta/classes-recipe/overlayfs.bbclass
similarity index 100%
rename from meta/classes/overlayfs.bbclass
rename to meta/classes-recipe/overlayfs.bbclass