colibri_imx7_emmc: add Colibri iMX7D 1GB (eMMC) module support

This commit adds support for the Toradex Colibri iMX7D 1GB Computer
on Module. The module is very similar to the Colibri iMX7D 512MB
but uses eMMC instead of raw NAND. This patch introduces a new
board specific Kconfig symbol to select between the two flash
options.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
diff --git a/board/toradex/colibri_imx7/MAINTAINERS b/board/toradex/colibri_imx7/MAINTAINERS
index 5ffb241..9c1d42a 100644
--- a/board/toradex/colibri_imx7/MAINTAINERS
+++ b/board/toradex/colibri_imx7/MAINTAINERS
@@ -1,6 +1,10 @@
 Colibri iMX7
 M:	Stefan Agner <stefan.agner@toradex.com>
+M:	Toradex ARM Support <support.arm@toradex.com>
+W:	http://developer.toradex.com/software/linux/linux-software
+W:	https://www.toradex.com/community
 S:	Maintained
 F:	board/toradex/colibri_imx7/
 F:	include/configs/colibri_imx7.h
 F:	configs/colibri_imx7_defconfig
+F:	configs/colibri_imx7_emmc_defconfig