mb/lenovo/t440p: Convert to ASL 2.0 syntax

Change-Id: I91e25fe62080582b925fa1f1a88512f318ab9415
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46198
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>

src/mainboard/lenovo/t440p/acpi/platform.asl

@@ -3,8 +3,8 @@
 Method(_WAK,1)
 {
 	/* ME may not be up yet. */
-	Store (0, \_TZ.MEB1)
-	Store (0, \_TZ.MEB2)
+	\_TZ.MEB1 = 0
+	\_TZ.MEB2 = 0
 	Return(Package(){0,0})
 }