Integrate meta-seco-imx/davc/gstreamer

Commit: https://git.seco.com/edgehog/layers/seco/meta-seco-imx/-/commit/4cb173536715172d7cdae111349574f3b0f11db8

[MACHINE][IMX-GST][IMAGE] Add imx-gst1.0-plugin into final image

Added this package as machine specific package to include into final image.

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Commit: https://git.seco.com/edgehog/layers/seco/meta-seco-imx/-/commit/2b865f59ac06d9be128cf80f171bf8f98ced5a1e

[IMX-GST] Fix a compilation error on imx-gst1.0-plugin

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Commit: https://git.seco.com/edgehog/layers/seco/meta-seco-imx/-/commit/60aee60b05e6e131a3a16053e32ad6541f1285d9

[MACHINE][GSTREAMER] Fix version to use of gstreamer for i.MX6 machines

The meta-freescale layer sets a custom version (by freescale) of gstreamer, only for i.MX8 based machines. We apply this fix also for the i.MX6 based machines.