Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/include/linux/soundcard.h b/include/linux/soundcard.h
index 1904afe..fe204fe 100644
--- a/include/linux/soundcard.h
+++ b/include/linux/soundcard.h
@@ -1231,7 +1231,7 @@
 #define SEQ_PANNING(dev, voice, pos) SEQ_CONTROL(dev, voice, CTL_PAN, (pos+128) / 2)
 
 /*
- * Timing and syncronization macros
+ * Timing and synchronization macros
  */
 
 #define _TIMER_EVENT(ev, parm)		{_SEQ_NEEDBUF(8);\