ALSA: hda: Move irq pending work into hda-intel stream

ALSA: hda: Move irq pending work into hda-intel stream

Currently, the delayed IRQ handling for PCM streams is managed in a
single work embedded in hda_intel, but this is basically a per-stream
thing.  Due to the single work, we can't cancel the work properly at
closing each stream, for example.

For making the IRQ pending work to be stream-based, this patch changes
the following:

- An extended version of azx_dev (i.e. the hd-audio stream object) is
  defined for snd-hda-intel
- The irq_pending flag and irq_pending_work are moved to
  hda_intel_stream, so that they can be hda-intel stream specific
- The stream creation and assignment are refactored so that
  snd-hda-intel can handle individually;
  the snd-hda-intel specific workaround for stream tags is also moved
  to snd-hda-intel itself instead of the common code
- The irq pending work is canceled properly at free / shutdown

While we're at it, changed the bit field flag to bool, as the bit
field doesn't help much in our case.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20260519121157.28477-1-tiwai@suse.de