tools include UAPI: Sync sound/asound.h copy with the kernel sources

Picking the changes from:

  55b71f6c ("ALSA: uapi: use C90 comment style instead of C99 style")
  fb6723da ("ALSA: pcm: comment about relation between msbits hw parameter and [S|U]32 formats")
  b456abe6 ("ALSA: pcm: introduce INFO_NO_REWINDS flag")
  5aec579e ("ALSA: uapi: Fix a C++ style comment in asound.h")

Which entails no changes in the tooling side as it doesn't introduce new
SNDRV_PCM_IOCTL_ ioctls.

To silence this perf tools build warning:

  Warning: Kernel ABI header at 'tools/include/uapi/sound/asound.h' differs from latest version at 'include/uapi/sound/asound.h'
  diff -u tools/include/uapi/sound/asound.h include/uapi/sound/asound.h

Cc: Mark Brown <broonie@kernel.org>
Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/all/YflN0j09T+6ODHIh@kernel.org


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>