power-8084: Revert POWER_HINT_LAUNCH handling

This effectively reverts commit 0ef4cb429ff3d42e8f8bd27d749ecd80f2911dc5.

Users (including myself) noticed some laggy behaviour.

The patch reverts to some more oomph at launch time, trying for a
compromise between performance and power saving.

Change-Id: I2d07686a131dcb75c9e590d99764d2a650cae507
1 file changed