lib/onboard-led: add ONBOARD_LED_FLOAT
lib/usb: properly record current configuration
lib/usb: suspend/resume overhaul
include/kinetis: add VBAT
usb-serial-loopback: config() takes enable/disable
usb: allow custom status completion callbacks
usb/dfu: finish status transaction before resetting
usb/dfu: add dfu app mode
lib/system: add sys_reset_to_loader()
usb/kinetis: formatting changes
usb/kinetis: implement pre-reset transceiver suspend