If ICMP is a fragment frame, the first fragment is routed to FW.
Other parts are routed to HW directly. This will lead fragment
out of order and some Network stack can't reassemble it. This
change is aimed to keep the ICMP notify FW logic, but route
the last fragment to FW, then the order can be kept.
CRs-Fixed: 3641824
Change-Id: If3e83943126a974d79f18824ff66b209cc4edd39