board: imx8mm: Add Engicam i.Core MX8M Mini C.TOUCH 2.0

Engicam C.TOUCH 2.0 is an EDIMM compliant general purpose Carrier
board.

Genaral features:
- Ethernet 10/100
- Wifi/BT
- USB Type A/OTG
- Audio Out
- CAN
- LVDS panel connector

i.Core MX8M Mini is an EDIMM SoM based on NXP i.MX8M Mini from Engicam.

i.Core MX8M Mini needs to mount on top of this Carrier board for
creating complete i.Core MX8M Mini C.TOUCH 2.0 board.

Linux dts commit details:

commit <a142252061ff> ("arm64: dts: imx8mm: Add Engicam i.Core MX8M Mini
C.TOUCH 2.0")

Add support for it.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
diff --git a/arch/arm/mach-imx/imx8m/Kconfig b/arch/arm/mach-imx/imx8m/Kconfig
index bf14f2d..171f36e 100644
--- a/arch/arm/mach-imx/imx8m/Kconfig
+++ b/arch/arm/mach-imx/imx8m/Kconfig
@@ -58,6 +58,11 @@
 	  * i.Core MX8M Mini needs to mount on top of EDIMM2.2 for
 	    creating complete i.Core MX8M Mini EDIMM2.2 Starter Kit.
 
+	  i.Core MX8M Mini C.TOUCH 2.0
+	  * C.TOUCH 2.0 is a general purpose Carrier board.
+	  * i.Core MX8M Mini needs to mount on top of this Carrier board
+	    for creating complete i.Core MX8M Mini C.TOUCH 2.0 board.
+
 config TARGET_IMX8MM_VENICE
 	bool "Support Gateworks Venice iMX8M Mini module"
 	select IMX8MM