Implementing IOMMU support for SDHCI

[Sai Pavan Boddu]

Hi Poalo/Peter,

We are trying to add SMMU support for dma's used in SD controller on ZynqMP 
boards. In order to do that we need a clean way to assign MemTxAttrs to each 
device(i.e all devices which connect to smmu) via "object_add_link_property/ 
object_set_link_property "  functions.

But in order to do that, first we may need to convert MemTxAttrs as QOM object. 
I just need some feedback, if its advisable to do so ?

Thanks & Regards,
Sai Pavan