[ALSA] intel8x0 - Fix Oops at kdump crash kernel

Fixed Oops at crash kernel from intel8x0 driver that is triggered
from interrupt handler.  Proper irqsave version seems needed for
kexec/kdump.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>