pinctrl: at91: use kernel-doc style for documentation of at91_gpio_chip

struct at91_pinctrl_mux_ops;

/**

 * struct at91_gpio_chip: at91 gpio chip

 * @chip: gpio chip

 * @range: gpio range

 * @next: bank sharing same clock

 * @pioc_hwirq: PIO bank interrupt identifier on AIC

 * @pioc_virq: PIO bank Linux virtual interrupt

 * @pioc_idx: PIO bank index

 * @regbase: PIO bank virtual address

 * @clock: associated clock

 * @ops: at91 pinctrl mux ops

 */

struct at91_gpio_chip {

	struct gpio_chip	chip;

	struct pinctrl_gpio_range range;

	struct at91_gpio_chip	*next;		/* Bank sharing same clock */

	int			pioc_hwirq;	/* PIO bank interrupt identifier on AIC */

	int			pioc_virq;	/* PIO bank Linux virtual interrupt */

	int			pioc_idx;	/* PIO bank index */

	void __iomem		*regbase;	/* PIO bank virtual address */

	struct clk		*clock;		/* associated clock */

	const struct at91_pinctrl_mux_ops *ops;	/* ops */

	struct at91_gpio_chip	*next;

	int			pioc_hwirq;

	int			pioc_virq;

	int			pioc_idx;

	void __iomem		*regbase;

	struct clk		*clock;

	const struct at91_pinctrl_mux_ops *ops;

};

static struct at91_gpio_chip *gpio_chips[MAX_GPIO_BANKS];