Pull sound updates from Takashi Iwai:
 "As shown in diffstat and logs, it was again a busy development cycle
  at this time, too. The most significant changes are still on-going
  refactoring / modernization works for ASoC core and drivers, but there
  are lots of other changes as well. Here we go, some highlights below:

  ASoC:

   - Quite a lot of cleanup / refactoring of ASoC core and APIs; most of
     them are systematic, but also including cleanups and modernization

   - A bulk of updates for some ASoC platforms, Freescale, sunxi and
     Intel SST/SOF

   - Initial support for Sound Open Firmware on i.MX8

   - Removal of deprecated w90x900 and nuc900 drivers

   - New support for Cirrus Logic CS47L15 and CS47L92, Freescale i.MX
     7ULP and 8MQ, Meson G12A and NXP UDA1334

  USB-audio:

   - More validations of descriptor units for hardening against bugs
     reported by fuzzers

   - PCM device assignment workaround for a past call-order change

   - Scarlett Gen2 mixer interface, a few more more quirks

  HD-audio:

   - Support for audio component with AMD/ATI and Nvidia HDMI codecs

   - Clean up HD-audio core and remove indirect access ops for Intel SOF

   - DMIC detection at probe; it would make systems automatically
     falling back to SST/SOF driver on devices that need DMIC handling.
     Needs a new Kconfig to set, and beware that it's still new and a
     bit experimental

  FireWire:

   - Lots of code refactoring and cleanups"

* tag 'sound-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (521 commits)
  ASoC: sdm845: remove unneeded semicolon
  ASoC: fsl_sai: Implement set_bclk_ratio
  ASoC: dmaengine: Replace strncpy() with strscpy_pad() for pcm->name
  ASoC: wcd9335: remove redundant use of ret variable
  ALSA: firewire-tascam: check intermediate state of clock status and retry
  ALSA: firewire-tascam: handle error code when getting current source of clock
  ASoC: hdmi-codec: Add an op to set callback function for plug event
  ASoC: rt5677: keep analog power register at SND_SOC_BIAS_OFF
  ASoC: rt5677: Remove magic number register writes
  ASoC: soc-core: self contained soc_unbind_aux_dev()
  ASoC: soc-core: add soc_unbind_aux_dev()
  ASoC: soc-core: self contained soc_bind_aux_dev()
  ASoC: soc-core: move soc_probe_link_dais() next to soc_remove_link_dais()
  ASoC: soc-core: self contained soc_probe_link_dais()
  ASoC: soc-core: add new soc_link_init()
  ASoC: soc-core: move soc_probe_dai() next to soc_remove_dai()
  ASoC: soc-core: self contained soc_remove_link_dais()
  ASoC: soc-core: self contained soc_remove_link_components()
  ASoC: soc-core: self contained soc_probe_link_components()
  ASoC: rt1308: make array pd static const, makes object smaller
  ...