msm: ipa: add new API for ipa bridge (formerly ODU bridge)

Add a new wrapper API for IPA_BRIDGE functionality on
top of existing ODU Bridge API.
This API can be used to setup multiple interfaces to be
offloaded using IPA.

CRs-Fixed: 2082391
Change-Id: Ifdcfe29efd2a323271bb861770e208a32f49572b
Acked-by: Ady Abraham <adya@qti.qualcomm.com>
Signed-off-by: Skylar Chang <chiaweic@codeaurora.org>