board: engicam: Attach i.MX6 common code

The existing common code for Engicam boards uses i.MX6,
so attach that into i.MX6 Engicam boards so-that adding
new SoC variants of Engicam boards become meaningful.

Add support for it.

Cc: Stefano Babic <sbabic@denx.de>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang<kever.yang@rock-chips.com>
diff --git a/board/engicam/imx6q/Kconfig b/board/engicam/imx6q/Kconfig
index 48eb60c..fab8da0 100644
--- a/board/engicam/imx6q/Kconfig
+++ b/board/engicam/imx6q/Kconfig
@@ -9,4 +9,6 @@
 config SYS_CONFIG_NAME
 	default "imx6-engicam"
 
+source "board/engicam/common/Kconfig"
+
 endif