iommu/mediatek: Update to {map,unmap}_pages

Update map/unmap to the new multi-page interfaces, which is dead easy
since we just pass them through to io-pgtable anyway.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/25b65b71e7e5d1006469aee48bab07ca87227bfa.1668100209.git.robin.murphy@arm.com


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