msm: ipa: Update IPA SRAM mapping

Update IPA SRAM mapping allocating more space
for Q6 IPA header processing contexts to
accommodates new requirements for more PDNs/Barriers.

Change-Id: I92d7ff4d805b3c90de582f1bba57b06507c3334c
Signed-off-by: Ghanim Fodi <gfodi@codeaurora.org>