dt-bindings: Remove "non-coherent" SMMU dt-binding documentation

This feature doesn't work properly and isn't used by any clients so remove
it.

Change-Id: I8ec7af8ec577831063c54d7e9a1b83b712c31668

parent d9db9b35

bindings/iommu/arm,smmu.txt

+0 −2

Original line number	Diff line number	Diff line
		@@ -231,8 +231,6 @@ conditions.
		--- "default":
		Pagetable coherency defaults to the coherency setting of the
		IOMMU device.
		--- "non-coherent":
		Pagetables are not coherent nor cached in the system cache..
		--- "coherent"
		Pagetables are io-coherent.
		--- "LLC"