Revert wait4vsync changes until panel init sequence is fixed.

Revert "video: msm: Remove timeout from wait4vsync"

This reverts commit 6dfe55a3af0c44409ad821390c577f1d03851e7a.

Revert "msm_fb: display: wait4vsync before set suspend flag"

This reverts commit 0864bf795748aa813100a76b193e940f64934b39.

Revert "msm_fb: display: wait4vsync after timing generator is turned off"

This reverts commit b71c1e01627af6e8fe89a5aaf47f3eb53c2c1d33.

Revert "msm_fb: display: replace msleep with wait4vsync"

This reverts commit 22cfd1533303c943b8cbe8f1f72982764bc4a976.