iommu/amd: Remove amd_iommu_device_info()

No one is using this function. Hence remove it. Also move PCI device
feature detection flags to amd_iommu_types.h as its only used inside
AMD IOMMU driver.

Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Tested-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://lore.kernel.org/r/20231006095706.5694-4-vasant.hegde@amd.com


Signed-off-by: Joerg Roedel <jroedel@suse.de>