Revert "Change LPA buffer size to match kernel"

 * Not needed with new kernel.

This reverts commit 31ab9ec5121b6c6b060b356d3e9a1fc94cb915cf.

Change-Id: I5326c937f05f2f840ede44e6991875efe7d91022
(cherry picked from commit 729fe038dd9e1ac52436b3662c8c6e6551b52252)