mb/starlabs/starbook/cml: Enable SRAM

Enable SRAM in devicetree so that resources are allocated properly
for it.

Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Change-Id: I1d7ee4f950b31f2be6fb7bd107b5fe54785ed81a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/67420
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/starlabs/starbook/variants/cml/devicetree.cb

@@ -86,6 +86,7 @@ chip soc/intel/cannonlake
 			register "usb2_ports[9]"		= "USB2_PORT_MID(OC_SKIP)"
 		end
 		device pci 14.1 off end						# USB xDCI (OTG)
+		device pci 14.2 on  end						# SRAM
 		device pci 14.3 on						# CNVi
 			chip drivers/wifi/generic
 				register "wake"			= "GPE0_PME_B0"