ec/quanta/ene_kb3940q/acpi: Replace Increment() with ASL 2.0 syntax

Replace `Increment(a)` with `a++`.

Change-Id: Ic009a868e98cc23dff16154244d65080c1edfa22
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/60584
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>

src/ec/quanta/ene_kb3940q/acpi/ec.asl

@@ -180,7 +180,7 @@ Device (EC0)
 		Local1 = PPCM - 1
 
 		If(LLess(Local0, Local1)) {
-			Increment(Local0)
+			Local0++
 			\PPCN ()
 		}