genirq/irqdomain: Make struct irqdomain readable

Tabular alignment of both kernel-doc and the actual struct declaration make
visual parsing way more conveniant.

No functional change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221124230313.514944367@linutronix.de

include/linux/irqdomain.h

@@ -119,23 +119,23 @@ struct irq_domain_chip_generic;
  * struct irq_domain - Hardware interrupt number translation object
  * @link:	Element in global irq_domain list.
  * @name:	Name of interrupt domain
- * @ops: pointer to irq_domain methods
- * @host_data: private data pointer for use by owner.  Not touched by irq_domain
+ * @ops:	Pointer to irq_domain methods
+ * @host_data:	Private data pointer for use by owner.  Not touched by irq_domain
  *		core code.
- * @flags: host per irq_domain flags
+ * @flags:	Per irq_domain flags
  * @mapcount:	The number of mapped interrupts
  *
- * Optional elements
+ * Optional elements:
  * @fwnode:	Pointer to firmware node associated with the irq_domain. Pretty easy
  *		to swap it for the of_node via the irq_domain_get_of_node accessor
  * @gc:		Pointer to a list of generic chips. There is a helper function for
  *		setting up one or more generic chips for interrupt controllers
  *		drivers using the generic chip library which uses this pointer.
- * @dev: Pointer to a device that the domain represent, and that will be
- *       used for power management purposes.
+ * @dev:	Pointer to a device that can be utilized for power management
+ *		purposes related to the irq domain.
  * @parent:	Pointer to parent irq_domain to support hierarchy irq_domains
  *
- * Revmap data, used internally by irq_domain
+ * Revmap data, used internally by the irq domain code:
  * @revmap_size:	Size of the linear map table @revmap[]
  * @revmap_tree:	Radix map tree for hwirqs that don't fit in the linear map
  * @revmap_mutex:	Lock for the revmap