ec/lenovo/h8/acpi: Fix wrongly used operator

Commit 37a89d519d ("ec/lenovo/h8/acpi: Replace Not() with ASL 2.0
syntax") mixed up boolean and bit-wise operators while replacing Not()
with ASL 2.0 syntax. Thus, fix that.

Built dsdt.aml of lenovo/x230 and differs, but it remains the same when
this commit is applied after commit 37a89d519d.

Change-Id: Ifa848aafb5480acaac4fabffcf90a3dbf5248e43
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66380
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/ec/lenovo/h8/acpi/thinkpad.asl

@@ -91,7 +91,7 @@ Device (HKEY)
 			}
 			Else
 			{
-				DHKN = DHKN & !Local0
+				DHKN = DHKN & ~Local0
 			}
 			If (EN)
 			{