soc/intel/braswell/acpi: Replace Store(a,b) with ASL 2.0 syntax

Replace `Store (a, b)` with `b = a`.

Change-Id: I2dd154c3d4e152a14783ea82e08a7d1257abebc3
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/70687
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
diff --git a/src/soc/intel/braswell/acpi/dptf/charger.asl b/src/soc/intel/braswell/acpi/dptf/charger.asl
index fb258f1..61672ba 100644
--- a/src/soc/intel/braswell/acpi/dptf/charger.asl
+++ b/src/soc/intel/braswell/acpi/dptf/charger.asl
@@ -26,7 +26,7 @@
 	Method (PPPC)
 	{
 		/* Convert size of PPSS table to index */
-		Store (SizeOf (\_SB.CHPS), Local0)
+		Local0 = SizeOf (\_SB.CHPS)
 		Local0--
 
 		/* Check if charging is disabled (AC removed) */
@@ -45,8 +45,8 @@
 	Method (SPPC, 1)
 	{
 		/* Retrieve Control (index 4) for specified PPSS level */
-		Store (DeRefOf (Index (DeRefOf (Index
-			(\_SB.CHPS, ToInteger (Arg0))), 4)), Local0)
+		Local0 = DeRefOf (Index (DeRefOf (Index
+			(\_SB.CHPS, ToInteger (Arg0))), 4))
 
 		/* Pass Control value to EC to limit charging */
 		\_SB.PCI0.LPCB.EC0.CHGS (Local0)