pinctrl: rza2: Include the appropriate headers
Linus Walleij authored

This driver is implementing a GPIO driver so include
<linux/gpio/driver.h> and not the legacy API <linux/gpio.h>.
When testing it turns out it also relies on implicit
inclusion of <linux/io.h> (readw etc) so make sure to
include that as well.

Cc: Chris Brandt <chris.brandt@renesas.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
0a686427
Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.