Revert "sdm: Allow poweron before first commit."

This reverts commit 2b08f933f8a44e2af39d59cf06da7203ab9eeda0.

The poweron function do the kick off the frame buffer.
But the DRM plane are empty because boot animation doesn't start yet.
Therefore the device will show the black screen.

Bug: 118594229
Test: no black screen after revert.
Change-Id: If88c04d608007bdc04e9bdf31b3e6f1d94817c07
1 file changed