emdk->emsdp: Rename board

Real marketing name of the board was recently updated so
to accommodate that change renaming the board and all
related to it.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
diff --git a/arch/arc/dts/Makefile b/arch/arc/dts/Makefile
index 17e1405..4f1e463 100644
--- a/arch/arc/dts/Makefile
+++ b/arch/arc/dts/Makefile
@@ -4,7 +4,7 @@
 dtb-$(CONFIG_TARGET_AXS103) +=  axs103.dtb
 dtb-$(CONFIG_TARGET_NSIM) +=  nsim.dtb
 dtb-$(CONFIG_TARGET_TB100) +=  abilis_tb100.dtb
-dtb-$(CONFIG_TARGET_EMDK) +=  emdk.dtb
+dtb-$(CONFIG_TARGET_EMSDP) +=  emsdp.dtb
 dtb-$(CONFIG_TARGET_HSDK) +=  hsdk.dtb
 dtb-$(CONFIG_TARGET_IOT_DEVKIT) +=  iot_devkit.dtb