[DYNAMIC-LAYERS] Add dynamic layers settings for supported architeture
Add support for additional dynamic layers in Edgehog Things, useful to support future features dependent on the architecture flavor. For this reason, four folders have been added:
${LAYERDIR}/dynamic-layers/raspberrypi
Support for Raspeberry PI flavor
${LAYERDIR}/dynamic-layers/seco-imx
Support for i.MX flavor
${LAYERDIR}/dynamic-layers/seco-rk
Support for Rockchip flavor
${LAYERDIR}/dynamic-layers/seco-intel
Support for Intel flavor
Note: consider that each addition will be placed on SECO's layer (e.g. for i.MX flavor, the future addition well be placed over meta-seco-imx layer).