WS cleanup: remove SPACE(s) followed by TAB

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/common/hwconfig.c b/common/hwconfig.c
index 26a561c..63b3cca 100644
--- a/common/hwconfig.c
+++ b/common/hwconfig.c
@@ -179,7 +179,7 @@
  *
  * This call is similar to hwconfig_f(), except that it takes additional
  * argument @subopt. In this example:
- * 	"dr_usb:mode=peripheral"
+ *	"dr_usb:mode=peripheral"
  * "dr_usb" is an option, "mode" is a sub-option, and "peripheral" is its
  * argument.
  */