ec/smsc/mec1308/acpi: Replace Increment() with ASL 2.0 syntax

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

Change-Id: Ib2154767cfc547ca9bd0a23937d50689be13fbcf
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/60582
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>

src/ec/smsc/mec1308/acpi/battery.asl

@@ -135,7 +135,7 @@ Device (BAT0)
 		Store (SWAB (BTPR), Local1)
 		If (LNotEqual (Local1, 0xFFFFFFFF) && LGreaterEqual (Local1, 0x8000)) {
 			Xor (Local1, 0xFFFF, Local1)
-			Increment (Local1)
+			Local1++
 		}
 		Store (Local1, PBST[1])
 
@@ -145,7 +145,7 @@ Device (BAT0)
 		Store (SWAB (BTRA), Local1)
 		If (LNotEqual (Local1, 0xFFFFFFFF) && LGreaterEqual (Local1, 0x8000)) {
 			Xor (Local1, 0xFFFF, Local1)
-			Increment (Local1)
+			Local1++
 		}
 
 		If (BFWK && ACEX && LNot (Local0)) {

src/ec/smsc/mec1308/acpi/ec.asl

@@ -69,7 +69,7 @@ Device (EC0)
 		// Force a read of CPU temperature
 		Store (CPUT, Local0)
 		/* So that we don't get a warning that Local0 is unused.  */
-		Increment (Local0)
+		Local0++
 	}
 
 	PowerResource (FNP0, 0, 0)