Update SDK release files.

(cherry picked from commit 93ebf9bf54c3e052a49f68a221b57577e5f602ef)

Change-Id: I3d70a48286674d43a7af6212dabce7053e2e1c7c
diff --git a/files/tools_source.properties b/files/tools_source.properties
index 515ff6b..d17ac45 100644
--- a/files/tools_source.properties
+++ b/files/tools_source.properties
@@ -1,3 +1,3 @@
 Pkg.UserSrc=false
 Pkg.Revision=20
-Platform.MinPlatformToolsRev=11
+Platform.MinPlatformToolsRev=12