omap3: add support for QUIPOS Cairo board.

This patch extends OMAP3 support for AM/DM37xx and
introduces the AM3703-based Quipos Cairo board.

Signed-off-by: Albert ARIBAUD (3ADEV) <albert.aribaud@3adev.fr>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/cpu/armv7/omap3/Kconfig b/arch/arm/cpu/armv7/omap3/Kconfig
index 4a0ac2c..65da6e2 100644
--- a/arch/arm/cpu/armv7/omap3/Kconfig
+++ b/arch/arm/cpu/armv7/omap3/Kconfig
@@ -91,6 +91,10 @@
 	bool "Twister"
 	select SUPPORT_SPL
 
+config TARGET_OMAP3_CAIRO
+	bool "QUIPOS CAIRO"
+	select SUPPORT_SPL
+
 endchoice
 
 config DM
@@ -133,5 +137,6 @@
 source "board/nokia/rx51/Kconfig"
 source "board/technexion/tao3530/Kconfig"
 source "board/technexion/twister/Kconfig"
+source "board/quipos/cairo/Kconfig"
 
 endif