pinctrl: intel: Drop unsued irqchip member in struct intel_pinctrl

There is no users of irqchip member in struct intel_pinctrl. Drop it.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

drivers/pinctrl/intel/pinctrl-intel.h

@@ -223,7 +223,6 @@ struct intel_pinctrl_context {
  * @pctldesc: Pin controller description
  * @pctldev: Pointer to the pin controller device
  * @chip: GPIO chip in this pin controller
- * @irqchip: IRQ chip in this pin controller
  * @soc: SoC/PCH specific pin configuration data
  * @communities: All communities in this pin controller
  * @ncommunities: Number of communities in this pin controller
@@ -236,7 +235,6 @@ struct intel_pinctrl {
 	struct pinctrl_desc pctldesc;
 	struct pinctrl_dev *pctldev;
 	struct gpio_chip chip;
-	struct irq_chip irqchip;
 	const struct intel_pinctrl_soc_data *soc;
 	struct intel_community *communities;
 	size_t ncommunities;