msm: ipa: Dual NIC IPA offload per-client stats feature

Adding kernel support for per-client statistics feature
to work with 2 IPA ETH clients.

Change-Id: I5fa510e7097a5ff24ea349cb094c3cd37b82ae1b
Acked-by: Eliad Ben Yishay <ebenyish@qti.qualcomm.com>
Signed-off-by: Ilia Lin <ilialin@codeaurora.org>