[PATCH v2] mx7ulp: add getting a board serial number

[sbabic at denx.de]

> From: Ricardo Salveti <ricardo at foundries.io>
> Get Unique ID of SoC iMX7ULP, using the logic described in Fusemap
> (IMX7ULPRMB2_Rev0_Fusemap) attached in the i.MX 7ULP APRM [1].
> [1]
> https://www.nxp.com/docs/en/reference-manual/IMX7ULPRMB2.pdf
> Signed-off-by: Ricardo Salveti <ricardo at foundries.io>
> Co-developed-by: Oleksandr Suvorov <oleksandr.suvorov at foundries.io>
> Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov at foundries.io>
> Reviewed-by: Fabio Estevam <festevam at gmail.com>
Applied to u-boot-imx, master, thanks !

Best regards,
Stefano Babic

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