arm64: dts: fast models: Enable PCIe ATS for Base RevC FVP

maillist inclusion
category: feature
bugzilla: 51855
CVE: NA

Reference: https://jpbrucker.net/git/linux/commit/?h=sva/2021-03-01&id=af3fee2e57e5ddd4f16cfad160e89cafddb0d629

---------------------------------------------

Declare that the host controller supports ATS, so the OS can enable it
for ATS-capable PCIe endpoints.
Signed-off-by: NJean-Philippe Brucker <jean-philippe@linaro.org>
Signed-off-by: NLijun Fang <fanglijun3@huawei.com>
Reviewed-by: NWeilong Chen <chenweilong@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

arch/arm64/boot/dts/arm/fvp-base-revc.dts

@@ -170,6 +170,7 @@
 		iommu-map = <0x0 &smmu 0x0 0x10000>;
 
 		dma-coherent;
+		ats-supported;
 	};
 
 	smmu: iommu@2b400000 {