Revert "msm7x27a-common: enable lpa for l5"

This reverts commit 3f3da9ea1668c394c4d71722485745dab58bdf81.
Revert "msm7x27a-common: enable LPA in audio_policy.conf"

This reverts commit a9435c06cc08466e1edbca41554ad028a9a33615.
msm7x27a-common: readd webkit flag

Change-Id: Ib62382a82f4817b32648c9c95c9eb2e20982a0d7