irq: make irq2_iommu to use dyn_array

#include <linux/interrupt.h>

#include <linux/dmar.h>

#include <linux/spinlock.h>

#include <linux/jiffies.h>

static int ir_ioapic_num;

int intr_remapping_enabled;

static struct {

struct irq_2_iommu {

	struct intel_iommu *iommu;

	u16 irte_index;

	u16 sub_handle;

	u8  irte_mask;

} irq_2_iommu[NR_IRQS];

};

#ifdef CONFIG_HAVE_DYNA_ARRAY

static struct irq_2_iommu *irq_2_iommu;

DEFINE_DYN_ARRAY(irq_2_iommu, sizeof(struct irq_2_iommu), nr_irqs, PAGE_SIZE, NULL);

#else

static struct irq_2_iommu irq_2_iommu[NR_IRQS];

#endif

static DEFINE_SPINLOCK(irq_2_ir_lock);