Input: whitespace fixes in drivers/input/touchscreen

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/touchscreen/mk712.c b/drivers/input/touchscreen/mk712.c
index 2d14a57..855c2c2 100644
--- a/drivers/input/touchscreen/mk712.c
+++ b/drivers/input/touchscreen/mk712.c
@@ -17,7 +17,7 @@
  * found in Gateway AOL Connected Touchpad computers.
  *
  * Documentation for ICS MK712 can be found at:
- * 	http://www.icst.com/pdf/mk712.pdf
+ *	http://www.icst.com/pdf/mk712.pdf
  */
 
 /*