src/mb/portwell/m107/acpi/superio.asl: Remove _PRS

IASL reports warning on missing _SRS.

Device has fixed configuration which is always enabled.
Remove _PRS for this fixed configuration.

BUG=N/A
TEST=build portwell m107

Change-Id: Idbc0a67136326c9231c168bfd8fadd2539da6745
Signed-off-by: Frans Hendriks <fhendriks@eltan.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63248
Reviewed-by: Erik van den Bogaert <ebogaert@eltan.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/portwell/m107/acpi/superio.asl

@@ -15,14 +15,4 @@ Device (COM1) {
 		FixedIO (0x6E, 0x02)
 		IRQNoFlags () {4}
 	})
-
-	Name (_PRS, ResourceTemplate ()
-	{
-		StartDependentFn (0, 0) {
-			FixedIO (0x03F8, 0x08)
-			FixedIO (0x6E, 0x02)
-			IRQNoFlags () {4}
-		}
-		EndDependentFn ()
-	})
 }