[qca-nss-drv] Add dscp2pri support.

This new feature maintains dscp to priority/action mapping
table in the procsys file system.

Change-Id: I195d3c3222faac6da9809a586f25c2a29e92234b
Signed-off-by: Murat Sezgin <msezgin@codeaurora.org>
6 files changed