msm: ipa: ipa driver upgrade for using GSI

In the targets where IPA HW version 3 is used, IPA uses Generic
Software Interface (GSI) as the transport layer protocol, instead
of the SPS protocol used in previous IPA HW versions. To adapt IPA
driver to this change, we changed IPA driver to use GSI APIs to send
immediate commands/packets to IPA HW.

Change-Id: I333776ae5a28f1c4a5536a784f32f1fc191bad4a
Signed-off-by: Skylar Chang <chiaweic@codeaurora.org>