Integrate meta-seco-edgehog-things/kirkstone_splash

Commit: edgehog/layers/seco/meta-seco-edgehog-things@b63548ac

[SPLASH] install u-boot splash image

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

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Commit: edgehog/layers/seco/meta-seco-edgehog-things@a0c2f598

[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: edgehog/layers/seco/meta-seco-edgehog-things@a0092634

[SPLASH] add edgehog logo to kernel

Install the Edgehog logo replacing the penguin for imx and rk

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Commit: edgehog/layers/seco/meta-seco-edgehog-things@851e0930

[LAYER] Add dynamic layers settings for supported architetures

Add dynamic layers for: imx, intel, rockchip

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Commit: edgehog/layers/seco/meta-seco-edgehog-things@caeaa954

[SPLASH] add recipe for U-boot splash image