soc/intel/adl, mb/google/brya: Add IPU to devicetree

BUG=b:181843816

Change-Id: I25309a8f0900070a8307fbce90ccb6d47f9c3dfc
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51261
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

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

@@ -91,6 +91,7 @@ chip soc/intel/alderlake
 	device domain 0 on
 		device ref igpu on end
 		device ref dtt on end
+		device ref ipu on end
 		device ref tbt_pcie_rp0 on end
 		device ref tbt_pcie_rp1 on end
 		device ref tbt_pcie_rp2 on end