Thanks, I'll try this later, after Clover + El Capitan final result:)
So... I've played with config.plist and got semi-working Sleep. By this, I mean that getting into Sleep is only working without AC attached. When laptop finally in Sleep mode, I can attach AC. Getting out of Sleep only works properly with attached AC - otherwise, I'll get black screen. But still, what is not working for now:
WebCam (USB\VID_0C45&PID_64D0&REV_3606)
Screen brightness regulation
Touchpad on/of switch
Power button
Display lid
WWAN (Dell Wireless 5570 HSPA+ VID 413C/PID 81A3)
Fingerprint (Broadcom USB\VID_0A5C&PID_5801&REV_0101)
CLOVER.zip