[PATCH v5 2/9] iommu/arm-smmu-v3: Replace s1_cfg with cdtab_cfg

[Michael Shavit]

> > > Sounds a lot like the existing s1fmt field. Can we keep it?
> >
> > If you are OK with the dead code, I don't object. But let's put it in
> > the struct arm_smmu_ctx_desc_cfg.
>
> Ok, we have a deal!

What dead code? Is the deal here that we keep the field, but still
infer the value to write from (cd_table->l1_desc == null) in
arm_smmu_write_strtab_ent??