Merge tag 'fixes-for-v4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus

usb: fixes for v4.18-rc1

First set of fixes for the current -rc cycle. The main parts being
warnings of different kinds being fixed. We're also adding support for
Intel'l Icelake devices on dwc3-pci.c.