commit 27dd9af6 ("ARM: dts: sunxi: Add a olinuxino-lime2-emmc")
added the new emmc equipped lime2 but forgot its Makefile.

This patch adds an entry to the Makefile.
Signed-off-by: NOlliver Schinagl <oliver@schinagl.nl>
Acked-by: NMaxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>