auto_hotplug updates from  @halaszk / siyahkernel-sgs3

https://github.com/halaszk/siyahkernel-sgs3/commit/5e63f9feba674eebbe4249cb29a449843f070231
https://github.com/halaszk/siyahkernel-sgs3/commit/2c8d450d259088b897bd12f5b755f1e9ce9e84e4