Pull up following revision(s) (requested by skrll in ticket #1468):
sys/external/bsd/dwc2/dwc2.c: revision 1.60
sys/external/bsd/dwc2/dwc2.c: revision 1.61
sys/external/bsd/dwc2/dwc2.c: revision 1.62
sys/external/bsd/dwc2/dwc2.c: revision 1.63
sys/external/bsd/dwc2/dwc2.c: revision 1.64
sys/external/bsd/dwc2/dwc2.c: revision 1.65
sys/external/bsd/dwc2/dwc2.c: revision 1.66
KNF
Make dwc2debug sysctl'able
Need <sys/sysctl.h> for previous
Use size_t for loop count variable
Calulate the right lenght for isoc transfer and the usb_syncmem
PR/54696: Kernel panic in bus_dma.c on Raspberry Pi 3B/3B+
build fix
Consistency.

(bouyer)