Integrate u-boot-seco-imx/add_mv_seco_config

Commit: clea-os/bsp/nxp/u-boot-seco-imx@77bfa7f9

[CONFIG][D18] Add new displays and touch overlays to seco_config

--

Commit: clea-os/bsp/nxp/u-boot-seco-imx@66bd34db

[ENV] Add loading of touch overlays for seco_config

--

Commit: clea-os/bsp/nxp/u-boot-seco-imx@48539c89

[CMD][CONFIG] Add touch sub-selection to seco_config