msm: ipa3: Add max PDN num based on hardware version

Currently defined max PDN number is generic for all
hardware version which is incorrect. Define PDN based
on hardware version to support correct number of PDN.

Change-Id: I3e898a32104562584b4702132c57b7f1cb8deeca
Signed-off-by: Pooja Kumari <kumarip@codeaurora.org>