ASoC: simple style fix

replace the tab with spaces,
make it align with other paragraphs
Signed-off-by: NLu Guanqun <guanqun.lu@intel.com>
Acked-by: NLiam Girdwood <lrg@ti.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

include/sound/soc-dapm.h

@@ -24,7 +24,7 @@
  * SoC dynamic audio power management
  *
  * We can have up to 4 power domains
- * 	1. Codec domain - VREF, VMID
+ *  1. Codec domain - VREF, VMID
  *     Usually controlled at codec probe/remove, although can be set
  *     at stream time if power is not needed for sidetone, etc.
  *  2. Platform/Machine domain - physically connected inputs and outputs