sb/intel/i82801gx,ix: Use HPTS() for HPET visibility

Change-Id: Id38228265ad89e3f96ea6f37bcc0da574a3f8c3f
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49484
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/southbridge/intel/i82801gx/acpi/lpc.asl b/src/southbridge/intel/i82801gx/acpi/lpc.asl
index ab6ffae..72e28eb 100644
--- a/src/southbridge/intel/i82801gx/acpi/lpc.asl
+++ b/src/southbridge/intel/i82801gx/acpi/lpc.asl
@@ -65,17 +65,7 @@
 
 		Method (_STA, 0)	// Device Status
 		{
-			If (HPTE) {
-				// Note: Ancient versions of Windows don't want
-				// to see the HPET in order to work right
-				If (OSYS >= 2001) {
-					Return (0xf)	// Enable and show device
-				} Else {
-					Return (0xb)	// Enable and don't show device
-				}
-			}
-
-			Return (0x0)	// Not enabled, don't show.
+			Return (\HPTS(HPTE))
 		}
 
 		Method (_CRS, 0, Serialized) // Current resources