msm: ipa: Add support for pdn in hal

Add new support for pdn in ipa-hal.
Create new API for pdn on ipa-hal nat.

Change-Id: I21fd3e187663b09362db194b5d71770fbe72a074
Acked-by: Michal Amsterdam <mamsterd@qti.qualcomm.com>
Signed-off-by: Amir Levy <alevy@codeaurora.org>