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If the resolution of the TFT display is smaller than the maximum resolution supported by the display controller, the display may be connected to the driver output arrays with a horizontal and/or vertical offset, leading to a shifted image. Add support for specifying these offsets. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Acked-by: Noralf Trønnes <noralf@tronnes.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200115124548.3951-4-geert+renesas@glider.be