src/mb/facebook/monolith/acpi/superio.asl: Remove _PRS

IASL reports warning on missing _SRS.

Devices have fixed configuration which is always enabled.
Remove _PRS for this fixed configuration.

BUG=N/A
TEST=built facebook monolith and verify no IASL warning is reported.

Change-Id: I554d3497255c1e50cdbe74b1cffc9f2c59fbae77
Signed-off-by: Frans Hendriks <fhendriks@eltan.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63244
Reviewed-by: Erik van den Bogaert <ebogaert@eltan.com>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/facebook/monolith/acpi/superio.asl

@@ -17,16 +17,6 @@ Device (COM1) {
 		FixedIO (0x6E, 0x02)
 		IRQNoFlags () {4}
 	})
-
-	Name (_PRS, ResourceTemplate ()
-	{
-		StartDependentFn (0, 0) {
-			FixedIO (0x03F8, 0x08)
-			FixedIO (0x6E, 0x02)
-			IRQNoFlags () {4}
-		}
-		EndDependentFn ()
-	})
 }
 
 Device (COM2) {
@@ -43,13 +33,4 @@ Device (COM2) {
 		FixedIO (0x03E8, 0x08)
 		IRQNoFlags () {3}
 	})
-
-	Name (_PRS, ResourceTemplate ()
-	{
-		StartDependentFn (0, 0) {
-			FixedIO (0x03E8, 0x08)
-			IRQNoFlags () {3}
-		}
-		EndDependentFn ()
-	})
 }