sunxi: non-FEL SPL boot support for sun7i

Add support for booting from an MMC card.

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Henrik Nordström <henrik@henriknordstrom.net>
Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Reviewed-by: Marek Vasut <marex@denx.de>
Cc: Tom Cubie <Mr.hipboi@gmail.com>
Reviewed-by: Tom Rini <trini@ti.com>
diff --git a/tools/.gitignore b/tools/.gitignore
index b1e997f..725db90 100644
--- a/tools/.gitignore
+++ b/tools/.gitignore
@@ -11,6 +11,7 @@
 /mkexynosspl
 /mpc86x_clk
 /mxsboot
+/mksunxiboot
 /ncb
 /proftool
 /relocate-rela