I have an original rpi installed now, loaded with OS Lite (32-bit)
Add an entry for it so that it can be used for testing.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>