[qca-nss-qdisc] Change qdiscs to use common message types

Certain qdiscs (like tbl, prio) use per sub-type messages which
makes it harder to abstract and also they serve no real purpose.
These have been modified to use the common shaper messages which
was introduced later.

Change-Id: I83c48f239ec6429693781736d8a89505d8ade55d
Signed-off-by: Sakthi Vignesh Radhakrishnan <sradhakr@codeaurora.org>
8 files changed