iommu/arm-smmu: Refactor master_cfg/fwspec usage

In preparation for restructuring iommu_fwspec, refactor the way we
access the arm_smmu_master_cfg private data to be less dependent on
the current layout.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Link: https://lore.kernel.org/r/20200326150841.10083-11-joro@8bytes.org
This commit is contained in:
Robin Murphy 2020-03-26 16:08:35 +01:00 • committed by Joerg Roedel
commit 2465170f98