arm: mvebu: Add SolidRun ClearFog Armada 38x initial support

This patch adds basic support for the SolidRun ClearFog Armada 38x based
board to mainline U-Boot. Supported interfaces / devices are:
- DDR3
- UART
- MMC
- Ethernet port 0 (connected to dedicated PHY)
- I2C

The included DT source was taken from Russell King's ftp server:
http://www.home.arm.linux.org.uk/~rmk/clearfog/

With only minor modifications, like the addition of some aliases and the
"u-boot,dm-pre-reloc" property.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Rabeeh Khoury <rabeeh@solid-run.com>
Cc: Luka Perkov <luka.perkov@sartura.hr>
diff --git a/configs/clearfog_defconfig b/configs/clearfog_defconfig
new file mode 100644
index 0000000..57d6a64
--- /dev/null
+++ b/configs/clearfog_defconfig
@@ -0,0 +1,21 @@
+CONFIG_ARM=y
+CONFIG_ARCH_MVEBU=y
+CONFIG_SYS_MALLOC_F_LEN=0x2000
+CONFIG_TARGET_CLEARFOG=y
+CONFIG_DEFAULT_DEVICE_TREE="armada-388-clearfog"
+CONFIG_SPL=y
+# CONFIG_CMD_IMLS is not set
+# CONFIG_CMD_FLASH is not set
+CONFIG_CMD_USB=y
+# CONFIG_CMD_SETEXPR is not set
+CONFIG_SPL_OF_TRANSLATE=y
+CONFIG_SPI_FLASH=y
+CONFIG_DEBUG_UART=y
+CONFIG_DEBUG_UART_BASE=0xd0012000
+CONFIG_DEBUG_UART_CLOCK=250000000
+CONFIG_DEBUG_UART_SHIFT=2
+CONFIG_SYS_NS16550=y
+CONFIG_USB=y
+CONFIG_DM_USB=y
+CONFIG_USB_EHCI_HCD=y
+CONFIG_USB_STORAGE=y