mb/samsung/lumpy: override SMBus subsystem ID

Necessary to allow coolstar's Windows touchpad driver for this board,
since the touchpad is attached to the SMBus. The VID/DID combo used is
not registered/doesn't conflict with any currently in use, and would
be difficult to change at this point since the Windows drivers have
already been signed.

TEST=build/boot Win11, Linux on butterfly/lumpy/parrot, verify
touchpad driver works properly.

Change-Id: Ica3756e117fc58166958f37e7b007abb79d9d350
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76744
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/samsung/lumpy/devicetree.cb

@@ -84,7 +84,9 @@ chip northbridge/intel/sandybridge
 				end
 			end
 			device ref sata1 on end # SATA Controller 1
-			device ref smbus on end # SMBus
+			device ref smbus on
+				subsystemid 0x04B4 0x18D1
+			end # SMBus
 			device ref sata2 off end # SATA Controller 2
 			device ref thermal on end # Thermal
 		end