New SDK architecture. DO NOT MERGE.

tools normally under the platform, move to a single location
called platform-tools/

Change-Id: I70659167778303722acb107a2d04bbf01467f884
diff --git a/sdk/plat_tools_source.properties b/sdk/plat_tools_source.properties
new file mode 100644
index 0000000..ba79b6c
--- /dev/null
+++ b/sdk/plat_tools_source.properties
@@ -0,0 +1,2 @@
+Pkg.UserSrc=false
+Pkg.Revision=1