[qca-nss-clients] Enable qdisc on 4.4 kernel

This uses qdisc_replace() API which is originally introduced in kernel
version 4.6, however this has been back ported to the 4.4 kernal
used in QSDK and therefore we are able to use it.

Change-Id: I2523e1ab41585690f63f56d69d919fe3a1df9f12
Signed-off-by: Sakthi Vignesh Radhakrishnan <sradhakr@codeaurora.org>
7 files changed