Add scp.bat to depot_tools path

Change-Id: Icb7b64b30e90365ca9163766fdb200dfe9341dce
diff --git a/scp.bat b/scp.bat
new file mode 100644
index 0000000..e7374ab
--- /dev/null
+++ b/scp.bat
@@ -0,0 +1,4 @@
+@echo off

+

+setlocal

+"%~dp0git-1.9.0.chromium.6_bin\bin\scp.exe" %*