msm: ipa: ABI compliance for msm_ipa.h

Changes to user space API exposed by IPA driver to allow
ABI compatibility. These changes involves changing some of the enums
for extensibility.

Change-Id: Ia35c5618b8f3987364487c23f2605f673e3ae76c
CRs-Fixed: 2044695
Acked-by: Ady Abraham <adya@qti.qualcomm.com>
Signed-off-by: Skylar Chang <chiaweic@codeaurora.org>