Merge pull request #66864 from SNiemann15/ibmpz_oc_mirror_restriction

[MULTIARCH-3446, 3447] Add 4.14 restriction for P/Z

Author: jeana-redhat

modules/oc-mirror-support.adoc

@@ -9,6 +9,11 @@
 
 The oc-mirror plugin supports mirroring {product-title} payload images and Operator catalogs for {product-title} versions 4.10 and later.
 
+[NOTE]
+====
+On `aarch64`, `ppc64le`, and `s390x` architectures the oc-mirror plugin is only supported for {product-title} versions 4.14 and later.
+====
+
 Use the latest available version of the oc-mirror plugin regardless of which versions of {product-title} you need to mirror.
 
 // TODO: Remove this in 4.14