arm: socfpga: Add samtec VIN|ING board

Add support for board based on the popular Altera Cyclone V SoC.
This board has the following properties:
 - 1 GiB of DRAM
 - 1 Gigabit ethernet
 - 1 USB gadget port
 - 1 USB host port with an on-board hub
 - 2 QSPI NORs connected to the Cadence QSPI core
 - Multiple I2C EEPROMs and one I2C temperature sensor

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Dinh Nguyen <dinguyen@opensource.altera.com>
Cc: Chin Liang See <clsee@altera.com>
---
V2: Update the defconfig as per Tom's request
diff --git a/configs/socfpga_vining_fpga_defconfig b/configs/socfpga_vining_fpga_defconfig
new file mode 100644
index 0000000..f8bb9a6
--- /dev/null
+++ b/configs/socfpga_vining_fpga_defconfig
@@ -0,0 +1,55 @@
+CONFIG_ARM=y
+CONFIG_ARCH_SOCFPGA=y
+CONFIG_SYS_MALLOC_F_LEN=0x2000
+CONFIG_SPL_DM=y
+CONFIG_DM_GPIO=y
+CONFIG_TARGET_SOCFPGA_SAMTEC_VINING_FPGA=y
+CONFIG_SPL_STACK_R_ADDR=0x00800000
+CONFIG_DEFAULT_DEVICE_TREE="socfpga_cyclone5_vining_fpga"
+CONFIG_SPL=y
+CONFIG_SPL_STACK_R=y
+CONFIG_FIT=y
+CONFIG_HUSH_PARSER=y
+CONFIG_CMD_BOOTZ=y
+# CONFIG_CMD_IMLS is not set
+CONFIG_CMD_ASKENV=y
+CONFIG_CMD_GREPENV=y
+# CONFIG_CMD_FLASH is not set
+CONFIG_CMD_MMC=y
+CONFIG_CMD_SF=y
+CONFIG_CMD_SPI=y
+CONFIG_CMD_I2C=y
+CONFIG_CMD_USB=y
+CONFIG_CMD_DFU=y
+CONFIG_CMD_USB_MASS_STORAGE=y
+CONFIG_CMD_GPIO=y
+CONFIG_CMD_DHCP=y
+CONFIG_CMD_MII=y
+CONFIG_CMD_PING=y
+CONFIG_CMD_CACHE=y
+CONFIG_CMD_TIME=y
+CONFIG_CMD_EXT4=y
+CONFIG_CMD_EXT4_WRITE=y
+CONFIG_CMD_FAT=y
+CONFIG_CMD_FS_GENERIC=y
+CONFIG_NET_RANDOM_ETHADDR=y
+CONFIG_SPL_DM_SEQ_ALIAS=y
+CONFIG_DWAPB_GPIO=y
+CONFIG_DM_MMC=y
+CONFIG_SPI_FLASH=y
+CONFIG_SPI_FLASH_SPANSION=y
+CONFIG_SPI_FLASH_STMICRO=y
+# CONFIG_SPI_FLASH_USE_4K_SECTORS is not set
+CONFIG_DM_ETH=y
+CONFIG_ETH_DESIGNWARE=y
+CONFIG_SYS_NS16550=y
+CONFIG_CADENCE_QSPI=y
+CONFIG_DESIGNWARE_SPI=y
+CONFIG_USB=y
+CONFIG_DM_USB=y
+CONFIG_USB_GADGET=y
+CONFIG_USB_GADGET_DWC2_OTG=y
+CONFIG_USB_GADGET_DOWNLOAD=y
+CONFIG_G_DNL_MANUFACTURER="samtec"
+CONFIG_G_DNL_VENDOR_NUM=0x0525
+CONFIG_G_DNL_PRODUCT_NUM=0xa4a5