[PATCH] drm/tegra: add missing include

[Thierry Reding]

On Fri, Jul 01, 2016 at 12:16:20PM +0200, Arnd Bergmann wrote:
> A newly merged patch to configure the XBAR caused a build failure
> in some configurations:
> 
> drivers/gpu/drm/tegra/sor.c: In function 'tegra_sor_set_pinmux':
> drivers/gpu/drm/tegra/sor.c:252:10: error: implicit declaration of function 'pinctrl_lookup_state' [-Werror=implicit-function-declaration]
>   state = pinctrl_lookup_state(sor->pinctrl, name);
>           ^~~~~~~~~~~~~~~~~~~~
> drivers/gpu/drm/tegra/sor.c:252:8: error: assignment makes pointer from integer without a cast [-Werror=int-conversion]
>   state = pinctrl_lookup_state(sor->pinctrl, name);
> 
> The functions are declared in linux/pinctrl/consumer.h, so we need
> to include that file instead of relying on the inclusion to happen
> through another header.
> 
> Signed-off-by: Arnd Bergmann <arnd at arndb.de>
> Fixes: 9e9d1315f4f4 ("drm/tegra: sor: Make XBAR configurable per SoC")
> ---
>  drivers/gpu/drm/tegra/sor.c | 1 +
>  1 file changed, 1 insertion(+)

This was actually introduced in 035f79bcd5e5 ("drm/tegra: sor: Support
DPAUX pin control"), which is causing other problems at runtime, so I've
backed it out again.

Thanks,
Thierry
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