board: synquacer: Add DeveloperBox 96boards EE support

Add the DeveloperBox 96boards EE support. This board is also
known as Socionext SynQuacer E-Series. It contians one "SC2A11"
SoC, which has 24-cores of arm Cortex-A53, and 4 DDR3 slots,
3 PCIe slots (1 4x port and 2 1x ports which are expanded via
PCIe bridge chip), 2 USB 3.0 ports and 2 USB 2.0 ports, 2 SATA
ports and 1 GbE, 64MB NOR flash and 8GB eMMC on standard
MicroATX Form Factor.

For more information, see this page;
  https://www.96boards.org/product/developerbox/

Signed-off-by: Masami Hiramatsu <masami.hiramatsu@linaro.org>
diff --git a/board/socionext/developerbox/Kconfig b/board/socionext/developerbox/Kconfig
new file mode 100644
index 0000000..706b8dc
--- /dev/null
+++ b/board/socionext/developerbox/Kconfig
@@ -0,0 +1,36 @@
+if ARCH_SYNQUACER
+
+choice
+	prompt "SC2A11 Cortex-A53 MPCore 24cores"
+	optional
+
+config TARGET_DEVELOPERBOX
+	bool "Socionext DeveloperBox"
+	select PCI
+	select DM_PCI
+	select PCIE_ECAM_SYNQUACER
+	select SYS_DISABLE_DCACHE_OPS
+	select OF_BOARD_SETUP
+	help
+	 Choose this option if you build the U-Boot for the DeveloperBox
+	 96boards Enterprise Edition.
+	 This board will booted from SCP firmware and it enables SMMU, thus
+	 the dcache is updated automatically when DMA operation is executed.
+endchoice
+
+config SYS_SOC
+	default "sc2a11"
+
+if TARGET_DEVELOPERBOX
+
+config SYS_BOARD
+	default "developerbox"
+
+config SYS_VENDOR
+	default "socionext"
+
+config SYS_CONFIG_NAME
+	default "synquacer"
+
+endif
+endif