Integrate meta-seco-edgehog-embedded/kirkstone_splash

Commit: https://git.seco.com/edgehog/layers/seco/meta-seco-edgehog-embedded/-/commit/840722294e2f2ccb4b88ec304c9e3794600ea451

[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-embedded/-/commit/dc408f12323eec01d1287bdb98272141ec0a87ef

[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-embedded/-/commit/2d30c2a1e4b6f350f6068e8634d6a7bc7202613f

[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-embedded/-/commit/479a92af4897bd25689657bd380295478c3974bb

[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-embedded/-/commit/4612f08db21f03f8090dd1f002a9168b77dbd18e

[SPLASH] add recipe for U-boot splash image