feat: enable IRQ remapping on amd64

This enables the IOMMU to do IRQ remapping besides DMA remapping
which is required by some devices to function with IOMMU.

Note IOMMU is disabled by default.

Signed-off-by: Radosław Piliszek <radoslaw.piliszek@gmail.com>
Signed-off-by: Andrey Smirnov <andrey.smirnov@siderolabs.com>

kernel/build/config-amd64

@@ -4771,7 +4771,7 @@ CONFIG_INTEL_IOMMU=y
 # CONFIG_INTEL_IOMMU_DEFAULT_ON is not set
 CONFIG_INTEL_IOMMU_FLOPPY_WA=y
 # CONFIG_INTEL_IOMMU_SCALABLE_MODE_DEFAULT_ON is not set
-# CONFIG_IRQ_REMAP is not set
+CONFIG_IRQ_REMAP=y
 CONFIG_HYPERV_IOMMU=y
 # CONFIG_VIRTIO_IOMMU is not set