mm-video: Use multimedia heap on MSM7x30 (720p) too.

Change-Id: I8c7997a1fdd9490cbec9729b07a50f40b1c07c2b
Use NO_IOMMU for msm7x30 too

Change-Id: I048747b1744cb7341466a45e03c93c5415b4b34c
Revert "mm-video: Use multimedia heap on MSM7x30 (720p) too."

This reverts commit 0bfb44a6a0b9f16107687fffb57b2d650312330a.