ALSA: emu10k1: rework copyright statements

ALSA: emu10k1: rework copyright statements

- Remove the "log-like" parts, following the same logic as the previous
  commit
- Unify format
- Add missing major contributors, including myself
- Sort entries in order of first contribution (Creative comes last for
  optical reasons; they don't appear to have directly contributed
  anyway)

Signed-off-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Link: https://lore.kernel.org/r/20230715160839.326978-2-oswald.buddenhagen@gmx.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>