Documentation: Generalize the "pci=noats" boot parameter

maillist inclusion
category: feature
bugzilla: 51855
CVE: NA

Reference: https://jpbrucker.net/git/linux/commit/?h=sva/2021-03-01&id=25fe4fbaddf2401ab711d800e89452f41930f98b

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The "pci=noats" kernel parameter disables PCIe ATS globally, and affects
any ATS-capable IOMMU driver. So rather than adding Arm SMMUv3, which
recently gained ATS support, to the list of relevant build options,
simplify the noats description.
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>

Documentation/admin-guide/kernel-parameters.txt

@@ -3813,8 +3813,8 @@
 				on: Turn realloc on
 		realloc		same as realloc=on
 		noari		do not use PCIe ARI.
-		noats		[PCIE, Intel-IOMMU, AMD-IOMMU]
-				do not use PCIe ATS (and IOMMU device IOTLB).
+		noats		[PCIE] Do not use PCIe ATS (and IOMMU device
+				IOTLB).
 		pcie_scan_all	Scan all possible PCIe devices.  Otherwise we
 				only look for one device below a PCIe downstream
 				port.