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/board/gdsys/a38x/hydra.h b/board/gdsys/a38x/hydra.h
new file mode 100644
index 0000000..26562a5
--- /dev/null
+++ b/board/gdsys/a38x/hydra.h
@@ -0,0 +1,14 @@
+struct ihs_fpga {
+	u32 reflection_low;		/* 0x0000 */
+	u32 versions;			/* 0x0004 */
+	u32 fpga_version;		/* 0x0008 */
+	u32 fpga_features;		/* 0x000c */
+	u32 reserved0[4];		/* 0x0010 */
+	u32 control;			/* 0x0020 */
+	u32 reserved1[375];		/* 0x0024 */
+	u32 qsgmii_port_state[80];	/* 0x0600 */
+};
+
+void print_hydra_version(uint index);
+void hydra_initialize(void);
+struct ihs_fpga *get_fpga(void);