arm: mvebu: Add gdsys ControlCenter-Compact board

The gdsys ControlCenter Digital board is based on a Marvell Armada 38x
SOC.

It boots from SPI-Flash but can be configured to boot from SD-card for
factory programming and testing.

On board peripherals include:
- 2 x GbE
- Xilinx Kintex-7 FPGA connected via PCIe
- mSATA
- USB3 host
- Atmel TPM

Signed-off-by: Dirk Eibach <dirk.eibach@gdsys.cc>
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/arch/arm/mach-mvebu/Kconfig b/arch/arm/mach-mvebu/Kconfig
index a256c2f..6ae54ef 100644
--- a/arch/arm/mach-mvebu/Kconfig
+++ b/arch/arm/mach-mvebu/Kconfig
@@ -112,6 +112,10 @@
 	select BOARD_LATE_INIT if USB
 	select MV78260
 
+config TARGET_CONTROLCENTERDC
+	bool "Support CONTROLCENTERDC"
+	select 88F6820
+
 endchoice
 
 config SYS_BOARD