msm: ipa: Make sure aggregation limit is upper bounded

IPA supports packet based as well as byte based aggregations.
The limits boundaries defined by the H/W.
If the requested limit exceeds the boundary, make sure
to use the maximal limit supported by the H/W.

CRs-Fixed: 2303737
Change-Id: I97391010a48ea4d22bd3fa3afe30dcae23bd0ab3
Signed-off-by: Ghanim Fodi <gfodi@codeaurora.org>