mb/google/trulo: Add initial devicetree.cb

This patch adds initial PCI device entries into the baseboard
devicetree.cb.

TEST=Able to build google/trulo.

Change-Id: I6ec25b98379cf7c8cbdb5be94d9f3ea43878620c
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82652
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <ericllai@google.com>

src/mainboard/google/brya/variants/baseboard/trulo/devicetree.cb

@@ -41,5 +41,17 @@ chip soc/intel/alderlake
 
 
 	device domain 0 on
+		device ref igpu on end
+		device ref dtt on end
+		device ref tcss_xhci on end
+		device ref xhci on end
+		device ref shared_sram on end
+		device ref heci1 on end
+		device ref uart0 on end
+		device ref pch_espi on
+			chip ec/google/chromeec
+				device pnp 0c09.0 on end
+			end
+		end
 	end
 end