Modules: Intel8x0 driver

1.In intel8x0_measure_ac97_clock routine, when stop DMA, there is not stop
  DMA corectly, but start another PCM In2 DMA engine.
2.In do_ali_reset routine, there is only need to enable PCM IN and PCM OUT.
Signed-off-by: NJaroslav Kysela <perex@suse.cz>