[qca-nss-ecm] Convert PPPoE interface handling to clients model

ECM doesn't send the PPPoE session information (session_id,
server mac address) to NSS FW along with the connection
create rule anymore. In NSS, PPPoE session rule is created
by the PPPoE clients module from now on. ECM now sends
only if a PPPoE interface exists on the flow or return
direction and the NSS interface number to NSS fw to be
handled by IPv4 and IPv6 rx packages when they create
the connection rules.

Change-Id: Icbb159b62f13a70bbec5106d9ef77b4d493ff03c
Signed-off-by: Murat Sezgin <msezgin@codeaurora.org>
7 files changed