mb/google/rex: Remove redundant VPU enablement code

This patch removes VPU enablement code that is no longer needed because
the VPU is already enabled by default in the baseboard devicetree.

BUG=b:332488817
TEST=Able to see VPU PCI device in lspci list after booting
google/screebo to OS

Change-Id: I94de92e970be1548068ed4e19309a95129f041ff
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82423
Reviewed-by: Sumeet R Pawnikar <sumeet.r.pawnikar@intel.com>
Reviewed-by: Jamie Ryu <jamie.m.ryu@intel.com>
Reviewed-by: Dinesh Gehlot <digehlot@google.com>
Reviewed-by: Eric Lai <ericllai@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/mainboard/google/rex/variants/karis/overridetree.cb

@@ -34,10 +34,6 @@ fw_config
 		option DISABLE			0
 		option ENABLE			1
 	end
-	field VPU 22
-		option VPU_DIS			0
-		option VPU_EN			1
-	end
 end
 
 chip soc/intel/meteorlake
@@ -585,8 +581,5 @@ chip soc/intel/meteorlake
 			end
 		end
 		device ref hda on end
-		device ref vpu on
-			probe VPU VPU_EN
-		end
 	end
 end

src/mainboard/google/rex/variants/rex0/overridetree.cb

@@ -52,10 +52,6 @@ fw_config
 		option ISH_DISABLE		0
 		option ISH_ENABLE		1
 	end
-	field VPU 22
-		option VPU_DIS			0
-		option VPU_EN			1
-	end
 end
 
 chip soc/intel/meteorlake
@@ -323,9 +319,6 @@ chip soc/intel/meteorlake
 		end
 		device ref tbt_pcie_rp0 on end
 		device ref tbt_pcie_rp2 on end
-		device ref vpu on
-			probe VPU VPU_EN
-		end
 		device ref tcss_xhci on
 			chip drivers/usb/acpi
 				device ref tcss_root_hub on

src/mainboard/google/rex/variants/screebo/overridetree.cb

@@ -30,10 +30,6 @@ fw_config
 		option WIFI_SAR_ID_0		0
 		option WIFI_SAR_ID_1		1
 	end
-	field VPU 22
-		option VPU_DIS			0
-		option VPU_EN			1
-	end
 end
 
 chip soc/intel/meteorlake
@@ -602,8 +598,5 @@ chip soc/intel/meteorlake
 				end
 			end
 		end
-		device ref vpu on
-			probe VPU VPU_EN
-		end
 	end
 end