dwc3: fix and add more quirks

[bz]

Summary

Fix snps,dis-del-phy-power-chg-quirk and add more quirks based on
hardware description or registers.
Enhance debug printing some more.

Obtained from: an old debugging patch and that is as much as I remember

[mw]

sys/dev/usb/controller/dwc3.c

235

This change is unconditional and is not described - as it changes behavior for all users of DWC3 driver, IMO it deserves to be put into a separate commit. (Actually I'd split to 3 or even 4 patches - this one, debug prints, snps,dis-del-phy-power-chg-quirk inversion and hwparams, but that's not a very hard demand :)).

[bz]

sys/dev/usb/controller/dwc3.c

235

I'll try to split it up after a re-base into multiple parts again. I hope I can remember some of the glory details if I stare long enough at it ;-)

[bz]

Went in as 4 separate commits ...