msm: ipa3: Move IPA immediate commands building to IPAHAL

IPA immediate commands building is a logic related to H/W.
As such, migrating this logic to IPAHAL (H/W abstraction
layer) of IPA driver and adapt the core driver code to use
it. New internal S/W API is added to access IPAHAL for
immediate commands building.

CRs-Fixed: 970323
Change-Id: I29bfc8446015d7a7fbbe53ebdf89bb9020ccd070
Signed-off-by: Ghanim Fodi <gfodi@codeaurora.org>