ec/google/wilco/acpi: Hide CrOS-specific devices from OS

Set _STA to 0xB for GOOG000C/GOOG000E devices to prevent showing
as missing drivers under Windows.

Change-Id: I0887fd6e18528d2c8523e7bc66db9efaa31adf5d
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68462
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/ec/google/wilco/acpi/ec_dev.asl

@@ -11,7 +11,7 @@ Device (WLCO)
 
 	Method (_STA)
 	{
-		Return (0xf)
+		Return (0xb)
 	}
 
 	Name (_CRS, ResourceTemplate ()

src/ec/google/wilco/acpi/ucsi.asl

@@ -6,7 +6,7 @@ Device (UCSI)
 	Name (_CID, EisaId ("PNP0CA0"))
 	Name (_DDN, "Wilco EC UCSI")
 	Name (_UID, One)
-	Name (_STA, 0xf)
+	Name (_STA, 0xb)
 
 	/* Value written to EC control register to start UCSI command */
 	Name (UCMD, 0xE0)