Revert "drm/msm: add smmu handler"

This reverts 'commit 29e061e2 ("drm/msm: add smmu handler")'
This is partial change for display drm driver,
that will break drm/sde merge commit.

Change-Id: I65034605b1caefe435a37c6fde78d4c52f3439c3
Signed-off-by: Narendra Muppalla <NarendraM@codeaurora.org>