Revert "mali_kbase: sync wakeup on event handoff from job done."

This reverts commit ef7db1a8.

Reason for Revert: subsequent merges added additional callsites
for this wakeup that might not make sense. Reverting this seems
to avert a long-runnable problem, so revert while targetting irq
wakeup path more directly.

Bug: 187129999
Change-Id: I5f685778b9a31c8dfeb2c22f8040ca29b439409d