iommu/vt-d: Make unnecessarily global functions static
Make some functions static as they are only used inside pasid.c. Signed-off-by: NLu Baolu <baolu.lu@linux.intel.com> Reviewed-by: NChristoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20210323010600.678627-6-baolu.lu@linux.intel.comSigned-off-by: NJoerg Roedel <jroedel@suse.de>
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