arm: socfpga: Add support for Terasic SoCkit board

Add support for Terasic SoCkit, which is CycloneV based board.
The board can boot either from SD/MMC or QSPI. Ethernet is also
supported.

Signed-off-by: Marek Vasut <marex@denx.de>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 3babe65..69c2c82 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -61,6 +61,7 @@
 dtb-$(CONFIG_ARCH_SOCFPGA) +=				\
 	socfpga_arria5_socdk.dtb			\
 	socfpga_cyclone5_socdk.dtb			\
+	socfpga_cyclone5_sockit.dtb			\
 	socfpga_cyclone5_socrates.dtb
 dtb-$(CONFIG_TARGET_DRA7XX_EVM) += dra72-evm.dtb
 dtb-$(CONFIG_TARGET_STV0991) += stv0991.dtb