[qca-nss-drv] Fix IPv6 connection sync issue with new APIs.

- Do not return in the switch/case loop after calling the conn sync function.
At the end of the function IPv6 netdev callback is called to upadte the
ECM and conntrack connections.
- Fix some boundry type checks in both IPv4 and IPv6 files.

Change-Id: I995ab91e3b3327626277724a565e81604eb40a6a
Signed-off-by: Murat Sezgin <msezgin@codeaurora.org>
2 files changed