video: mdss: Revert recent changes

 * Some instability is introduced with this patchset. Revert for now
   while the issue is debugged.

Revert "msm: mdss: refactor MDSS idle power collapse logic"

This reverts commit a90a739b1eb5b9ef9075ba2ce7d978e1f0e52d3e.

Revert "msm: mdss: reset runtime status upon device resume"

This reverts commit 4c937e815f584ba0e0d58715b965d19ae4b3e2c7.

Revert "msm: mdss: support reduced dspp and WB interfaces"

This reverts commit 4f15ba557dcddd92f4ecfd422cd6f9b35b144fcf.

Revert "mdss: display: move mdss_mdp_irq_enable out of clk_lock scope"

This reverts commit 8034f4882388f95e519f1194cc63a13be9417af8.

Revert "msm: mdss: reset cont splash screen flag after notifying panel intf"

This reverts commit 502d833be18295e9aab918e941686fc140296906.

Change-Id: I358256feeffdde8b5dbd804bf79b1c83082a40d7