Enable tcp mss clamp for Tethering

With this change, IPv4 tethering clients (such as PC) with default
MTU size 1500 will be configured again in the phone to use MTU
matching the carrier network, then no IP fragemention in the phone
and have higher data throughput for tethering.

bug:17552732
Change-Id: Ia306b1b8454da1b0e2d9c320e770aeff172d5fc4
1 file changed
tree: 03319f70376f78ebf0df540d51c6f0f409f33e46
  1. client/
  2. include/
  3. server/