imx: add imx8x based deneb board

Add support for Capricorn Deneb SoM variant.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
diff --git a/board/siemens/capricorn/Kconfig b/board/siemens/capricorn/Kconfig
index ed1f793..21c3ef9 100644
--- a/board/siemens/capricorn/Kconfig
+++ b/board/siemens/capricorn/Kconfig
@@ -10,3 +10,16 @@
 	default "giedi"
 
 endif
+
+if TARGET_DENEB
+
+config SYS_BOARD
+	default "capricorn"
+
+config SYS_VENDOR
+	default "siemens"
+
+config SYS_CONFIG_NAME
+	default "deneb"
+
+endif