Add config for nexys FPGA board

configs/fpgas/pulpissimo/nexys.sh

@@ -0,0 +1,22 @@
+#!/bin/bash -e
+
+export PULPRT_TARGET=pulpissimo
+export PULPRUN_TARGET=pulpissimo
+
+if [  -n "${ZSH_VERSION:-}" ]; then 
+    DIR="$(readlink -f -- "${(%):-%x}")"
+    scriptDir="$(dirname $DIR)"
+else
+
+    scriptDir="$(dirname "$(readlink -f "${BASH_SOURCE[0]}")")"
+
+fi
+
+source $scriptDir/../../common.sh
+
+export PULPRUN_PLATFORM=fpga
+
+#Nexys Video uses 5MHz SoC Frequency
+export PULPRT_CONFIG_CFLAGS='-DARCHI_FPGA_PER_FREQUENCY=5000000 -DARCHI_FPGA_SOC_FREQUENCY=10000000'
+
+export io=uart