Intelli HotPlug: more updates / fixes by Alucard24.

https://github.com/Alucard24/Alucard-Kernel-jfltexx/commit/83ae47cf7e1c6f05f6888a16d5f7204794cbc355

Optimized in order to avoid useless queuing.
Switched to power efficient wq.
Fixed cancel function.
alucard_hotplug: optimized awaking, sleeping mode.
Delayed init call for alucard_hotplug