arm: socfpga: Add support for the Terasic DE-0 Atlas board

Add support for the Terasic DE0-Nano/Atlas-SoC Kit, which is a CycloneV
based board. The board can boot from SD/MMC. Ethernet is also supported.

Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
diff --git a/arch/arm/mach-socfpga/Kconfig b/arch/arm/mach-socfpga/Kconfig
index 1244ef4..089280a 100644
--- a/arch/arm/mach-socfpga/Kconfig
+++ b/arch/arm/mach-socfpga/Kconfig
@@ -22,6 +22,10 @@
 	bool "DENX MCVEVK (Cyclone V)"
 	select TARGET_SOCFPGA_CYCLONE5
 
+config TARGET_SOCFPGA_TERASIC_DE0_NANO
+	bool "Terasic DE0-Nano-Atlas (Cyclone V)"
+	select TARGET_SOCFPGA_CYCLONE5
+
 config TARGET_SOCFPGA_TERASIC_SOCKIT
 	bool "Terasic SoCkit (Cyclone V)"
 	select TARGET_SOCFPGA_CYCLONE5
@@ -31,6 +35,7 @@
 config SYS_BOARD
 	default "arria5-socdk" if TARGET_SOCFPGA_ARRIA5_SOCDK
 	default "cyclone5-socdk" if TARGET_SOCFPGA_CYCLONE5_SOCDK
+	default "de0-nano-soc" if TARGET_SOCFPGA_TERASIC_DE0_NANO
 	default "mcvevk" if TARGET_SOCFPGA_DENX_MCVEVK
 	default "sockit" if TARGET_SOCFPGA_TERASIC_SOCKIT
 
@@ -38,6 +43,7 @@
 	default "altera" if TARGET_SOCFPGA_ARRIA5_SOCDK
 	default "altera" if TARGET_SOCFPGA_CYCLONE5_SOCDK
 	default "denx" if TARGET_SOCFPGA_DENX_MCVEVK
+	default "terasic" if TARGET_SOCFPGA_TERASIC_DE0_NANO
 	default "terasic" if TARGET_SOCFPGA_TERASIC_SOCKIT
 
 config SYS_SOC
@@ -46,6 +52,7 @@
 config SYS_CONFIG_NAME
 	default "socfpga_arria5" if TARGET_SOCFPGA_ARRIA5_SOCDK
 	default "socfpga_cyclone5" if TARGET_SOCFPGA_CYCLONE5_SOCDK
+	default "socfpga_de0_nano_soc" if TARGET_SOCFPGA_TERASIC_DE0_NANO
 	default "socfpga_mcvevk" if TARGET_SOCFPGA_DENX_MCVEVK
 	default "socfpga_sockit" if TARGET_SOCFPGA_TERASIC_SOCKIT