gpio: davinci: Add support for multiple GPIO controllers
Update GPIO driver to support Multiple GPIO controllers by updating the base of subsequent GPIO chips with total of previous chips gpio count so that gpio_add_chip gets unique numbers. Signed-off-by: Keerthy <j-keerthy@ti.com> Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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