After commit 19677a38:
"hw/ac97: add support for volume control"

We are (correctly) using AC97_Record_Gain_Mute and not AC97_Line_In_Volume_Mute
for recording volume, but various places in hw/ac97 were still assumimg that
we are using AC97_Line_In_Volume_Mute for record volume control, this patch
fixes this.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: Nmalc <av1474@comtv.ru>