DtIo: more boilerplate for non-coherence support

intel / FdtBusPkg

Device Tree-based Platform Device Driver Development for Tiano UEFI

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Closed andreiw closed 6 months ago

andreiw commented 6 months ago

Add EFI_DT_IO_DMA_NON_COHERENT to the extra constraints.
Disallow non-coherence in Map and AllocateBuffer
Allow non-coherence in PciHostBridgeFdtDxe (which now completely defers to FdtBusDxe for DMA).