ARC: Add support for EM Development Kit board

Synopsys DesignWare ARC EM Development Kit (ARC EMDK) is
an FPGA-based development platform from Synopsys aimed to speed-up
development of software for ARC EM cores and entire subsystems based on
ARC EM like Data Fusion, Secure and Sensor & Control subsystems.

U-Boot is supposed to be used as a primary bootloader on EMDK allowing
users to easily load and start their application from micro-SD card.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index aee15d5..6f139d5 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -150,6 +150,10 @@
 config TARGET_AXS103
 	bool "Support Synopsys Designware SDP board AXS103"
 
+config TARGET_EMDK
+	bool "Synopsys EM Development kit"
+	select CPU_ARCEM6
+
 config TARGET_HSDK
 	bool "Support Synpsys HS DevelopmentKit board"
 
@@ -158,6 +162,7 @@
 source "board/abilis/tb100/Kconfig"
 source "board/synopsys/Kconfig"
 source "board/synopsys/axs10x/Kconfig"
+source "board/synopsys/emdk/Kconfig"
 source "board/synopsys/hsdk/Kconfig"
 
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