mb/clevo/l140cu: Make PCI devices P2SB and PMC hidden

The PCI devices P2SB and PMC are hidden by the FSP. So instead turning
them off, set their state to hidden being able to allocate ressources
for them.

Change-Id: Ie6e12f99b0a7ffb1c4831b3aa8705e911b677e88
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48371
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/clevo/cml-u/variants/l140cu/devicetree.cb

@@ -192,8 +192,8 @@ chip soc/intel/cannonlake
 				device pnp 0c31.0 on  end
 			end
 		end
-		device pci 1f.1 off end # P2SB
-		device pci 1f.2 off end # Power Management Controller
+		device pci 1f.1 hidden end # P2SB
+		device pci 1f.2 hidden end # Power Management Controller
 		device pci 1f.3 on	# Intel HDA
 			register "PchHdaAudioLinkHda" = "1"
 		end