iommu/vt-d: Rename iommu_disable_dev_iotlb()

Rename iommu_disable_dev_iotlb() to iommu_disable_pci_caps() to pair with
iommu_enable_pci_caps().

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20221118132451.114406-5-baolu.lu@linux.intel.com


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