mb/lenovo/x1_1st_gen/devicetree: Use subsystemid inheritance
PCI ID was changed according to the reports from Linux Hardware Project:
https://github.com/linuxhw/LsPCI/tree/master/Notebook/Lenovo/ThinkPad
Change-Id: I67b81a4c9378c13d557e5d9c5d3797cebeeff5a1
Signed-off-by: Peter Lemenkov <lemenkov@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37942
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>