msm7x27a-common: Enable retire fence

also enable EGL_WORKAROUND_BUG_10194508

Change-Id: I4c64b793d5844369dcdce1a15e269b4c6e3c1a6c
Revert "msm7x27a-common: we don't have iommu"

Merged in cm no need this now

This reverts commit 0677f86fdc8a97db832912595b6cb434a04ba55a.

Change-Id: I40b01ebe05469a8ca4a33d8161442a9f06cbedb1