Update FEMU compilation script

Author: huaicheng

femu-scripts/femu-compile.sh

@@ -4,7 +4,7 @@ NRCPUS="$(cat /proc/cpuinfo | grep "vendor_id" | wc -l)"
 
 make clean
 # --disable-werror --extra-cflags=-w --disable-git-update
-../configure --enable-kvm --target-list=x86_64-softmmu
+../configure --enable-kvm --target-list=x86_64-softmmu --enable-slirp
 make -j $NRCPUS
 
 echo ""