Revert "Revert "Add 4MB version of HP 8200 SFF""

This reverts commit 2099545078.

Wasn't this config's fault, the problem happens elsewhere too.

I'm going to revert build/boot/roms to an older version and backport
a few recent changes, to see if that fixes the problem. If it does,
then I know that the recent linker issues happen due to recent changes
in build/boot/roms

The linker errors typically appear in util/kconfig/ but can happen
elsewhere, seemingly random, which means I'm not handling distclean
properly. Something isn't getting cleaned properly.

Signed-off-by: Leah Rowe <leah@libreboot.org>

resources/coreboot/hp8200sff_4mb/board.cfg

@@ -0,0 +1,9 @@
+cbtree="default"
+romtype="normal"
+arch="x86_64"
+payload_grub="y"
+payload_grub_withseabios="y"
+payload_seabios="y"
+payload_memtest="y"
+grub_scan_disk="ahci"
+microcode_required="n"