mx6: Add initial SPL support for HummingBoard-i2eX

Add the initial SPL support for HummingBoard-i2eX, which is based on a
MX6 Dual.

For more information about HummingBoard, please check:
http://www.solid-run.com/products/hummingboard/

Based on the work from Jon Nettleton and Rabeeh Khoury.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 7ed0e20..7c383cb 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -523,6 +523,11 @@
 	select CPU_V7
 	select SUPPORT_SPL
 
+config TARGET_MX6CUBOXI
+	bool "Support Solid-run mx6 boards"
+	select CPU_V7
+	select SUPPORT_SPL
+
 config TARGET_MX6SLEVK
 	bool "Support mx6slevk"
 	select CPU_V7
@@ -856,6 +861,7 @@
 source "board/siemens/pxm2/Kconfig"
 source "board/siemens/rut/Kconfig"
 source "board/silica/pengwyn/Kconfig"
+source "board/solidrun/mx6cuboxi/Kconfig"
 source "board/solidrun/hummingboard/Kconfig"
 source "board/spear/spear300/Kconfig"
 source "board/spear/spear310/Kconfig"