Revert "vfio: Add new IRQ for DMA fault reporting"

virt inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I61SPO
CVE: NA

--------------------------------

This reverts commit 31ed6dc2.
Signed-off-by: NKunkun Jiang <jiangkunkun@huawei.com>
Reviewed-by: NKeqian Zhu <zhukeqian1@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

include/uapi/linux/vfio.h

@@ -733,9 +733,6 @@ struct vfio_irq_info_cap_type {
 	__u32 subtype;  /* type specific */
 };
 
-#define VFIO_IRQ_TYPE_NESTED				(1)
-#define VFIO_IRQ_SUBTYPE_DMA_FAULT			(1)
-
 /**
  * VFIO_DEVICE_SET_IRQS - _IOW(VFIO_TYPE, VFIO_BASE + 10, struct vfio_irq_set)
  *