Revert "wakelock: remove deprecated create_singlethread_workqueue and replace with the modern alloc_workqueue."

This reverts commit d089ec6db03efcb3fba04aaeec393b3e8cc6e57e.
Revert "wakelock: fix Kernel error when compiling with CONFIG_WAKELOCK_STAT=n. I'm done with wakelock stats, users should their times enjoying their phones and stop looking at stuff that they don't compreehnd."

This reverts commit 8c843b985c33ecf61f35415a6573145a93f3a966.
configs: reenable wakelock stats

Signed-off-by: Rohan Mathur <rohanmathur34@gmail.com>