History for barebox / arch / arm / boards / embedsky-e9 / defaultenv-e9 / boot / mmc3

This will add support for Embedsky E9 board.
It is a small board based on i.MX6 Quad with 2G of RAM.

http://en.embedsky.com/product_info.php?cateid=169&id=169

Signed-off-by: Andrey Panov <rockford@yandex.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>