iommu/amd: Move struct iommu_dev_data to amd_iommu.c

The struct is only used there, so it doesn't need to be in
the header file.

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

diff --cc drivers/iommu/amd_iommu.c
Simple merge

diff --cc drivers/iommu/amd_iommu_types.h
Simple merge