[Barefoot][Syncd] restart of the interface for cleaning txquee throug…

…h which communication takes place between Sonic and openBMC (sonic-net#9941)

Why I did it
improvement of starting barefoot SDK

How I did it
restart of the interface for cleaning txquee through which communication takes place between Sonic and openBMC

How to verify it
run sonic autorestart tests

files/scripts/syncd.sh

@@ -28,6 +28,14 @@ function startplatform() {
         debug "Firmware update procedure ended"
     fi
 
+    if [[ x"$sonic_asic_platform" == x"barefoot" ]]; then
+        is_usb0=$(ls /sys/class/net | grep usb0)
+        if [[ "$is_usb0" == "usb0" ]]; then
+            /usr/bin/ip link set usb0 down
+            /usr/bin/ip link set usb0 up
+        fi
+    fi
+
     if [[ x"$WARM_BOOT" != x"true" ]]; then
         if [ x$sonic_asic_platform == x'cavium' ]; then
             /etc/init.d/xpnet.sh start