mb/google/nissa/var/nivviks: Set PCIE WLAN bluetooth companion device

To publish the Bluetooth Regulator Domain Settings under the right
ACPI device scope, the wifi generic driver requires the bluetooth
companion to be set accordingly.

BUG=b:345596420
TEST=Build and test on nivviks, check BRDS is shown in SSDT.

Change-Id: Ib654f22033c68edbc602f14537aaa2151800598d
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83943
Reviewed-by: Dinesh Gehlot <digehlot@google.com>
Reviewed-by: Eric Lai <ericllai@google.com>
Reviewed-by: V Sowmya <v.sowmya@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/google/brya/variants/nivviks/overridetree.cb

@@ -515,6 +515,7 @@ chip soc/intel/alderlake
 			chip drivers/wifi/generic
 				register "wake" = "GPE0_DW1_03"
 				register "add_acpi_dma_property" = "true"
+				use usb2_port10 as bluetooth_companion
 				device pci 00.0 on
 					probe WIFI_CATEGORY WIFI_7
 				end