Include Android support in READMEs (#44274)

Author: alzimmermsft

README.md

@@ -40,6 +40,10 @@ The management libraries can be identified by namespaces that start with `azure-
 
 Note that the latest libraries from Microsoft are in the `com.azure` Maven group ID, and have the package naming pattern of beginning with `com.azure`. If you're using libraries that are in `com.microsoft.azure` Maven group ID, or have this as the package structure, please consider migrating to the latest libraries. You can find a mapping table from these historical releases to their equivalent [here](https://azure.github.io/azure-sdk/releases/deprecated/index.html#java).
 
+### Android Support
+
+The Azure SDKs for Java do not provide support for Android. While we attempt to allow the SDKs to be used on Android, we do not test or support this scenario.
+
 ## Need help?
 
 - For reference documentation visit the [Azure SDK for Java documentation](https://aka.ms/java-docs).

sdk/serialization/azure-xml/README.md

@@ -167,6 +167,13 @@ Get started with Azure libraries that are [built using Azure Core](https://azure
 If you encounter any bugs, please file issues via [GitHub Issues](https://github.com/Azure/azure-sdk-for-java/issues/new/choose)
 or checkout [StackOverflow for Azure Java SDK](https://stackoverflow.com/questions/tagged/azure-java-sdk).
 
+### Android Support
+
+While the Azure SDKs for Java do not explicitly support Android, `azure-xml` is capable of being used in an Android
+application. However, for `azure-xml` to work on Android the Android application needs to add a dependency on
+[javax.xml.stream:stax-api](https://central.sonatype.com/artifact/javax.xml.stream/stax-api) which provides 
+`javax.xml.stream` to environments that don't have them (such as Android).
+
 ## Contributing
 
 For details on contributing to this repository, see the [contributing guide](https://github.com/Azure/azure-sdk-for-java/blob/main/CONTRIBUTING.md).