mb/amd/thatcher: Convert to ASL 2.0 syntax

Change-Id: If1869d091f9c78db7e308143d96b5d3046510ac8
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46152
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/amd/thatcher/acpi/sleep.asl b/src/mainboard/amd/thatcher/acpi/sleep.asl
index af87ce6..e09a638 100644
--- a/src/mainboard/amd/thatcher/acpi/sleep.asl
+++ b/src/mainboard/amd/thatcher/acpi/sleep.asl
@@ -26,20 +26,20 @@
 	/* DBGO("\n") */
 
 	/* Clear sleep SMI status flag and enable sleep SMI trap. */
-	/*Store(One, CSSM)
-	Store(One, SSEN)*/
+	/*CSSM = 1
+	SSEN = 1*/
 
 	/* On older chips, clear PciExpWakeDisEn */
-	/*if (LLessEqual(\_SB.SBRI, 0x13)) {
-	*	Store(0,\_SB.PWDE)
+	/*if (\_SB.SBRI <= 0x13) {
+	*	\_SB.PWDE = 0
 	*}
 	*/
 
 	/* Clear wake status structure. */
-	Store(0, Index(WKST,0))
-	Store(0, Index(WKST,1))
+	WKST [0] = 0
+	WKST [1] = 0
 
-	Store (0x07, UPWS)
+	UPWS = 0x07
 } /* End Method(\_PTS) */
 
 /*
@@ -64,6 +64,6 @@
 	/* DBGO(" to S0\n") */
 
 	/* clear USB wake up signal */
-	Store(1, USBS)
+	USBS = 1
 	Return(WKST)
 } /* End Method(\_WAK) */