Move source prop files for docs/platforms/usb driver back into dev.

Change-Id: I4632dc69432b720d586c84834f89c843a2eaf5cd
diff --git a/sdk/usbdriver_source.properties b/sdk/usbdriver_source.properties
new file mode 100755
index 0000000..d7666eb
--- /dev/null
+++ b/sdk/usbdriver_source.properties
@@ -0,0 +1,4 @@
+Pkg.Revision=3

+Archive.Os=WINDOWS

+Archive.Arch=ANY

+Extra.Path=usb_driver