[Patch V3 41/44] imx8ulp: add upower api support

[sbabic at denx.de]

> From: Peng Fan <peng.fan at nxp.com>
> Add upower api support, this is modified from upower firmware exported
> package.
> Signed-off-by: Peng Fan <peng.fan at nxp.com>
Applied to u-boot-imx, master, thanks !

Best regards,
Stefano Babic

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