msm: msm_fb: Do not use ION_IOMMU_UNMAP_DELAYED flag.
Since iommu buffers will be unmapped after two newer commits
had passed, there is no need to request iommu driver to further
delay unmapping an iommu buffer.

print out if calculated mdp clk is less than pclk.

Change back to use mdp_max_clk as oppo did.

Add log to so we can see if fb_info aint registred in msm_fb_do_refresh
Also add a small sleep to be sure it has time to registre

Remove a CONFIG_VENDOR_EDIT as its now already in jb_26 by default.