gpiolib / ACPI: document the GPIO descriptor based interface
In addition to the existing ACPI specific GPIO interface, document the new descriptor based GPIO interface in Documentation/acpi/enumeration.txt, so it is clear that this new interface is preferred over the ACPI specific version. Signed-off-by:Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by:
Alexandre Courbot <acourbot@nvidia.com> Signed-off-by:
Linus Walleij <linus.walleij@linaro.org>
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