[PATCH V2 07/53] imx: move get_boot_device to common file

[sbabic at denx.de]

> From: Peng Fan <peng.fan at nxp.com>
> i.MX8MN/P/ULP supports ROM API, they have almost same get_boot_device
> implementation, so move to a common file. And when support i.MX9,
> no need to include the other function copy.
> Since sys_proto.h is included in imx_romapi.c, there will be build
> warning for i.MX8M because wdog_regs not defined, so include imx-regs.h
> in i.MX8M sys_proro.h
> 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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