Merge branch 'topic/usb-validation' into for-next

Pull USB validation patches.  It's based on the latest 5.3 development
branch, so we shall catch up the whole things.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --cc sound/pci/hda/hda_controller.c
Simple merge

diff --cc sound/pci/hda/hda_controller.h
Simple merge

diff --cc sound/pci/hda/hda_intel.c
Simple merge

diff --cc sound/pci/hda/patch_realtek.c
Simple merge

diff --cc sound/usb/Makefile
Simple merge

diff --cc sound/usb/mixer.c
Simple merge

diff --cc sound/usb/mixer_quirks.c
Simple merge

diff --cc sound/usb/pcm.c
Simple merge

diff --cc sound/usb/stream.c
Simple merge