iommu/vt-d: Remove dmar_readl() and dmar_readq()

iommu/vt-d: Remove dmar_readl() and dmar_readq()

dmar_readl() and dmar_readq() do nothing other than expand to the generic
readl() and readq(), and the dmar_read*() wrappers are used inconsistently.

Remove the dmar_read*() wrappers and use readl() and readq() directly.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Samiullah Khawaja <skhawaja@google.com>
Link: https://lore.kernel.org/r/20260217214438.3395039-2-bhelgaas@google.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>