dt-bindings: PCI: microchip,pcie-host: Fix DMA coherency property

PolarFire SoC may be configured in a way that requires non-coherent DMA
handling. On RISC-V, buses are coherent by default & the dma-noncoherent
property is required to denote buses or devices that are non-coherent.
For some reason, instead of adding dma-noncoherent to the binding
the pointless, NOP, property dma-coherent was. Swap dma-coherent for
dma-noncoherent.

Fixes: 04aa999 ("dt-bindings: PCI: microchip,pcie-host: Allow dma-noncoherent")
Signed-off-by: Conor Dooley <[email protected]>
Signed-off-by: Krzysztof Wilczyński <[email protected]>
Link: https://lore.kernel.org/r/20250516-datebook-senator-ff7a1c30cbd5@spud

Author: ConchuOD

Documentation/devicetree/bindings/pci/microchip,pcie-host.yaml

@@ -50,7 +50,7 @@ properties:
     items:
       pattern: '^fic[0-3]$'
 
-  dma-coherent: true
+  dma-noncoherent: true
 
   ranges:
     minItems: 1