ec/kontron/it8516e/acpi: Replace Multiply(a,b) with ASL 2.0 syntax

Replace `Multiply (a, b)` with `a * b`.

Change-Id: Iabddeb97c045ee211011ffe5cd947321a5fafaab
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/60568
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/ec/kontron/it8516e/acpi/pm_channels.asl

@@ -91,7 +91,7 @@ Device (PM2) {
 		Release (EC_MUTEX)
 
 		Or (ShiftLeft (Local1, 8), Local0, Local0)
-		Store (Divide (Multiply (Local0, 10), 64), Local0)	/* Convert to 10th °C */
+		Store (Divide (Local0 * 10, 64), Local0)	/* Convert to 10th °C */
 		Return (Local0 + 2732)				/* Return as 10th Kelvin */
 	}
 }