src: Typo fix (cosmetic)

Change-Id: I81985bd2836bdeb369587f170504a8a048ee496b
Signed-off-by: Peter Lemenkov <lemenkov@gmail.com>
Reviewed-on: https://review.coreboot.org/29196
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/southbridge/amd/sb800/hda.c

@@ -89,7 +89,7 @@ no_codec:
 }
 
 /**
- *  Wait 50usec for for the codec to indicate it is ready
+ *  Wait 50usec for the codec to indicate it is ready
  *  no response would imply that the codec is non-operative
  */
 static int wait_for_ready(void *base)
@@ -110,7 +110,7 @@ static int wait_for_ready(void *base)
 }
 
 /**
- *  Wait 50usec for for the codec to indicate that it accepted
+ *  Wait 50usec for the codec to indicate that it accepted
  *  the previous command.  No response would imply that the code
  *  is non-operative
  */