mb/amd/{bilby,mandolin}: Turn empty chip entry into comment

A chip entry in the devicetree is not hooked up without a device
beneath it. It seems the intention was to leave these superio
drivers unconfigured, so there should be no harm to turn the
entries into comments.

Change-Id: I6b606f35eba089b74c562084772d95be41cac39c
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57430
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>

src/mainboard/amd/bilby/devicetree.cb

@@ -160,8 +160,7 @@ chip soc/amd/picasso
 			device ref xgbe_1 off end # integrated Ethernet MAC
 		end
 		device ref lpc_bridge on
-			chip superio/smsc/sio1036 # optional debug card
+			# chip superio/smsc/sio1036 # optional debug card
-			end
 		end
 	end # domain
 

src/mainboard/amd/mandolin/variants/cereme/devicetree.cb

@@ -149,8 +149,7 @@ chip soc/amd/picasso
 			device ref xgbe_1 off end # integrated Ethernet MAC
 		end
 		device ref lpc_bridge on
-			chip superio/smsc/sio1036 # optional debug card
+			# chip superio/smsc/sio1036 # optional debug card
-			end
 		end
 	end # domain
 

src/mainboard/amd/mandolin/variants/mandolin/devicetree.cb

@@ -149,8 +149,7 @@ chip soc/amd/picasso
 			device ref xgbe_1 off end # integrated Ethernet MAC
 		end
 		device ref lpc_bridge on
-			chip superio/smsc/sio1036 # optional debug card
+			# chip superio/smsc/sio1036 # optional debug card
-			end
 		end
 	end # domain