ALSA: hda - Drop unsol event handler for Intel HDMI codecs

ALSA: hda - Drop unsol event handler for Intel HDMI codecs

BugLink: https://bugs.launchpad.net/bugs/1848046
[ Upstream commit f2dbe87c5ac1f88e6007ba1f1374f4bd8a197fb6 ]

We don't need to deal with the unsol events for Intel chips that are
tied with the graphics via audio component notifier.  Although the
presence of the audio component is checked at the beginning of
hdmi_unsol_event(), better to short cut by dropping unsol_event ops.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=204565
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Paolo Pisati <paolo.pisati@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>