Change in coreboot[master]: mb/system76/lemp9: move subsystem id from Kconfig to devicetree

[9elements QA (Code Review)]

9elements QA has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/45528 )

Change subject: mb/system76/lemp9: move subsystem id from Kconfig to devicetree
......................................................................

Patch Set 2:

Automatic boot test returned (PASS/FAIL/TOTAL): 8/1/9
"QEMU x86 q35/ich9" (x86_32) using payload TianoCore : SUCCESS : https://lava.9esec.io/r/20059
"QEMU x86 q35/ich9" (x86_32) using payload SeaBIOS : SUCCESS : https://lava.9esec.io/r/20058
"QEMU x86 i440fx/piix4" (x86_64) using payload SeaBIOS : FAIL : https://lava.9esec.io/r/20057
"QEMU x86 i440fx/piix4" (x86_32) using payload SeaBIOS : SUCCESS : https://lava.9esec.io/r/20056
"QEMU AArch64" using payload LinuxBoot_u-root_kexec : SUCCESS : https://lava.9esec.io/r/20055
"HP Z220 SFF Workstation" (x86_32) using payload LinuxBoot_BusyBox_kexec : SUCCESS : https://lava.9esec.io/r/20063
"HP Z220 SFF Workstation" (x86_32) using payload LinuxBoot_BusyBox_kexec : SUCCESS : https://lava.9esec.io/r/20062
"HP Compaq 8200 Elite SFF PC" (x86_32) using payload TianoCore : SUCCESS : https://lava.9esec.io/r/20061
"HP Compaq 8200 Elite SFF PC" (x86_32) using payload SeaBIOS : SUCCESS : https://lava.9esec.io/r/20060

Please note: This test is under development and might not be accurate at all!