[S] Change in coreboot[master]: configs: Rename saved configs as config.vendor_board.description

[Angel Pons (Code Review)]

Attention is currently required from: Martin L Roth, Arthur Heymans.

Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/69213 )

Change subject: configs: Rename saved configs as config.vendor_board.description
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Patch Set 2:

(1 comment)

File configs/config.emulation_qemu-i440fx:

PS2: 
util/abuild picks up this one.

We don't need this anymore because CB:39382 made abuild always build-test the default config for a board. The config.h and coreboot.rom are identical:

```
./util/abuild/abuild -a --timeless -y -c $(nproc) -Z -t emulation/qemu-i440fx
diff -s -q coreboot-builds/EMULATION_QEMU_X86_I440FX/config.h coreboot-builds/EMULATION_QEMU_X86_I440FX_/config.h
diff -s -q coreboot-builds/EMULATION_QEMU_X86_I440FX/coreboot.rom coreboot-builds/EMULATION_QEMU_X86_I440FX_/coreboot.rom
```