pinctrl/u300/coh901: stop spawning pinctrl from GPIO

Let's stop spawning the pinctrl driver from the GPIO driver,
we have these two mechanisms broken apart now, and they can
each probe in isolation. If the GPIO driver cannot find its
pin controller (pinctrl-u300), the pin controller core will
tell it to defer probing.

Reviewed-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

include/linux/platform_data/pinctrl-coh901.h

@@ -13,12 +13,10 @@
  * struct u300_gpio_platform - U300 GPIO platform data
  * @ports: number of GPIO block ports
  * @gpio_base: first GPIO number for this block (use a free range)
- * @pinctrl_device: pin control device to spawn as child
  */
 struct u300_gpio_platform {
 	u8 ports;
 	int gpio_base;
-	struct platform_device *pinctrl_device;
 };
 
 #endif /* __MACH_U300_GPIO_U300_H */