Integrate meta-seco-edgehog-things/kirkstone_splash

Commit: https://git.seco.com/edgehog/layers/seco/meta-seco-edgehog-things/-/commit/b63548acf0f53104b2242fef3875bb8285e05d9f

[SPLASH] install u-boot splash image

Install the U-boot splash image in the main boot partition

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Commit: https://git.seco.com/edgehog/layers/seco/meta-seco-edgehog-things/-/commit/a0c2f598930db115b9c38da7397cea8c2183deb8

[SPLASH] add psplash

Add psplash:

• add psplash to embedded-base and -full images
• configure appropriate colors and images
• add the psplash-quit service, which forcefully closes psplash after 10 seconds

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Commit: https://git.seco.com/edgehog/layers/seco/meta-seco-edgehog-things/-/commit/a00926347ede1e9f34bf53ac0f7af7a6aa2d24a1

[SPLASH] add edgehog logo to kernel

Install the Edgehog logo replacing the penguin for imx and rk

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Commit: https://git.seco.com/edgehog/layers/seco/meta-seco-edgehog-things/-/commit/851e0930dbe5d3422c322dfe436da7c289bfd638

[LAYER] Add dynamic layers settings for supported architetures

Add dynamic layers for: imx, intel, rockchip

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Commit: https://git.seco.com/edgehog/layers/seco/meta-seco-edgehog-things/-/commit/caeaa954d3e53b0184dd59c4e43d0e3bb8c1e364

[SPLASH] add recipe for U-boot splash image