sound fixes for 4.17-rc3

A significant amount of fixes have been piled up at this time.

- Possible Spectre v1 coverage in OSS sequencer API, control API,
  HD-audio hwdep ioctl, ASIHPI hwdep ioctl, OPL3, and HDSPM/RME
  channel_info API.

- A regression fix in PCM delay reporting that happened at the code
  refactoring for the set_fs() removal

- The long-standing bug in PCM sync_ptr ioctl that missed the audio
  timestamp field

- USB-audio regression fixes due to the recent UAC2 jack support

- vm_fault_t conversions in a couple of places

- ASoC topology API fixes

- Assorted driver fixes:
  * ASoC rsnd, FSL, Intel SST, DMIC, AMD, ADAU17x1, Realtek codec
  * FireWire typo fix
  * HD-audio quirks and USB-audio Dell fixup
  * USB-audio UAC3 corrections
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