msm: ipa: macros to determine the structure mismatch

Macros to determine the structure mismatch between ipa_lnx_agent
and ipa driver. Also includes new framework APIs to get the
IPA client info for the IPA stats module.

Change-Id: I15399b6730c7f4b5c6c7a63684c674f8899dc151
Signed-off-by: Michael Adisumarta <madisuma@codeaurora.org>