ALSA: pci: vx222: fix kernel-doc warning

ALSA: pci: vx222: fix kernel-doc warning

make W=1 warnings:

sound/pci/vx222/vx222_ops.c:86: warning: expecting prototype for
snd_vx_inb(). Prototype was for vx2_inb() instead

sound/pci/vx222/vx222_ops.c:97: warning: expecting prototype for
snd_vx_outb(). Prototype was for vx2_outb() instead

sound/pci/vx222/vx222_ops.c:110: warning: expecting prototype for
snd_vx_inl(). Prototype was for vx2_inl() instead

sound/pci/vx222/vx222_ops.c:121: warning: expecting prototype for
snd_vx_outl(). Prototype was for vx2_outl() instead

sound/pci/vx222/vx222_ops.c:221: warning: expecting prototype for
vx_setup_pseudo_dma(). Prototype was for vx2_setup_pseudo_dma()
instead

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210302215430.87309-4-pierre-louis.bossart@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>