Fix channels swapping of 4 channels playback by
using vortex_adbdma_stopfifo instead of vortex_adbdma_pausefifo
for SNDRV_PCM_TRIGGER_STOP event
Signed-off-by: Raymond Yau <superquad.vortex2@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>