drm/tilcdc: include linux/pinctrl/consumer.h again

This was apparently dropped by accident in a recent
cleanup, causing a build failure in some configurations now:

drivers/gpu/drm/tilcdc/tilcdc_tfp410.c:296:12: error: implicit declaration of function 'devm_pinctrl_get_select_default' [-Werror,-Wimplicit-function-declaration]

Fixes: fcb57664172e ("drm/tilcdc: drop use of drmP.h")
Signed-off-by: Arnd Bergmann <[e-mail]>
Reviewed-by: Laurent Pinchart <[e-mail]>
Signed-off-by: Jyri Sarha <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]
Acked-by: Sam Ravnborg <[e-mail]>

drivers/gpu/drm/tilcdc/tilcdc_tfp410.c

···
 #include <linux/gpio.h>
 #include <linux/mod_devicetable.h>
 #include <linux/of_gpio.h>
+#include <linux/pinctrl/consumer.h>
 #include <linux/platform_device.h>
 
 #include <drm/drm_atomic_helper.h>