Update tools/ADT revision.

Change-Id: I4c0fc9be7b64606d109dd636066f856d618465a0
diff --git a/files/tools_source.properties b/files/tools_source.properties
index 2e8aa8a..4e57c28 100644
--- a/files/tools_source.properties
+++ b/files/tools_source.properties
@@ -1,3 +1,3 @@
 Pkg.UserSrc=false
-Pkg.Revision=22.0.1
+Pkg.Revision=22.2.0
 Platform.MinPlatformToolsRev=16