ec/lenovo/h8/acpi: Replace Not() with ASL 2.0 syntax

Change-Id: I8a0f18d37c065827a0f5b54f24ea1fcde497c504
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/60724
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Sean Rhodes <sean@starlabs.systems>
diff --git a/src/ec/lenovo/h8/acpi/thinkpad.asl b/src/ec/lenovo/h8/acpi/thinkpad.asl
index 1dc7c05..7c56106 100644
--- a/src/ec/lenovo/h8/acpi/thinkpad.asl
+++ b/src/ec/lenovo/h8/acpi/thinkpad.asl
@@ -91,7 +91,7 @@
 			}
 			Else
 			{
-				DHKN = DHKN & Not (Local0)
+				DHKN = DHKN & !Local0
 			}
 			If (EN)
 			{