amd-based mainboards: Fix whitespace in _PTS comments

Correct tabs that were intended as spaces.

Change-Id: Idcf33d829f87a866b5ed880527102918d5b93842
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://review.coreboot.org/17905
Reviewed-by: Martin Roth <martinroth@google.com>
Tested-by: build bot (Jenkins)
diff --git a/src/mainboard/lippert/frontrunner-af/dsdt.asl b/src/mainboard/lippert/frontrunner-af/dsdt.asl
index 1106988..94612e6 100644
--- a/src/mainboard/lippert/frontrunner-af/dsdt.asl
+++ b/src/mainboard/lippert/frontrunner-af/dsdt.asl
@@ -825,9 +825,9 @@
 	*		-none-
 	*
 	* The _PTS control method is executed at the beginning of the sleep process
-	* for S1-S5. The sleeping value is passed to the _PTS control method.	This
+	* for S1-S5. The sleeping value is passed to the _PTS control method.  This
 	* control method may be executed a relatively long time before entering the
-	* sleep state and the OS may abort	the operation without notification to
+	* sleep state and the OS may abort the operation without notification to
 	* the ACPI driver.  This method cannot modify the configuration or power
 	* state of any device in the system.
 	*/