mx7ulp_com: add support for SPL

Add EA iMX7ULP COM board support for building SPL.

Signed-off-by: Ricardo Salveti <ricardo@foundries.io>
Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@foundries.io>
diff --git a/arch/arm/dts/imx7ulp-com.dts b/arch/arm/dts/imx7ulp-com.dts
index c01e03d..dcfa374 100644
--- a/arch/arm/dts/imx7ulp-com.dts
+++ b/arch/arm/dts/imx7ulp-com.dts
@@ -6,6 +6,7 @@
 /dts-v1/;
 
 #include "imx7ulp.dtsi"
+#include "imx7ulp-com-u-boot.dtsi"
 
 / {
 	model = "Embedded Artists i.MX7ULP COM";