[U-Boot] [U-Boot,v4,14/20] mx6sabresd: Add DM_GPIO support

[sbabic at denx.de]

> Add the DM_GPIO related config for mx6sabresd.
> Also add the gpio request calls.
> Signed-off-by: Abel Vesa <abel.vesa at nxp.com>
> Reviewed-by: Peng Fan <peng.fan at nxp.com>
> Reviewed-by: Fabio Estevam <festevam at gmail.com>

Applied to u-boot-imx, master, thanks !

Best regards,
Stefano Babic

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