ALSA: hda/conexant: Add quirk for HP ProBook 450 G4 mute LED

commit 6d1f86610f23b0bc334d6506a186f21a98f51392 upstream.

Allows the LED on the dedicated mute button on the HP ProBook 450 G4
laptop to change colour correctly.

Signed-off-by: John Veness <john-linux@pelago.org.uk>
Cc: <stable@vger.kernel.org>
Link: https://patch.msgid.link/2fb55d48-6991-4a42-b591-4c78f2fad8d7@pelago.org.uk


Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>