mb/google/guybrush: Hide I2S machine driver from Windows OS

No Windows driver exists or is needed, so hide to prevent an unknown
device from being listed in Windows Device Manager.

TEST=build/boot Win11 on dewatt, verify unknown device for the ACP
machine driver no longer present.

Change-Id: I44d25fd2ea75593383cbb14f2324d4376b399de7
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77676
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>

src/mainboard/google/guybrush/variants/baseboard/devicetree.cb

@@ -348,7 +348,7 @@ chip soc/amd/cezanne
 			device ref acp on
 				chip drivers/amd/i2s_machine_dev
 					register "hid" = ""AMDI1019""
-					device generic 0.0 on end
+					device generic 0.0 hidden end
 				end
 			end # Audio
 		end

src/mainboard/google/guybrush/variants/dewatt/overridetree.cb

@@ -8,7 +8,7 @@ chip soc/amd/cezanne
 			device ref acp on
 				chip drivers/amd/i2s_machine_dev
 					register "hid" = ""AMDI5619""
-					device generic 0.0 on end
+					device generic 0.0 hidden end
 				end
 			end # Audio
 		end

src/mainboard/google/guybrush/variants/nipperkin/overridetree.cb

@@ -196,7 +196,7 @@ chip soc/amd/cezanne
 			device ref acp on
 				chip drivers/amd/i2s_machine_dev
 					register "hid" = ""10029836""
-					device generic 0.0 on end
+					device generic 0.0 hidden end
 				end
 			end # Audio
 			device ref xhci_1 on # USB 3.1 (USB1)