Reviewed-on: https://codeberg.org/libreboot/lbmk/pulls/13

i downloaded this file from git manually at some point,
when rebasing changes (i think it was the ec ones)

the logic in the file is correct but i forgot to mark
it executable

without this commit, lbmk fails utterly, on all the newer
intel boards

This is useful for e.g. HP EliteBook 2560p.

In coreboot config, enable e.g. (for lbmk blobutil):

CONFIG_KBC1126_FW1="../../ec/hp2560p/ec.bin.fw1"
CONFIG_KBC1126_FW2="../../ec/hp2560p/ec.bin.fw2"

In resources/blobs/sources you would have these entries:

EC_url
EC_url_bkup
EC_hash

In cases where the vendor update file contains a full
ROM image encompassing IFD+GbE+ME+BIOS, blobutil was
saving the *entire* ROM containing those, as me.bin.
For example, if it's an 8MB ROM, blobutil would create
a me.bin file that is actually the whole ROM containing:

* Vendor IFD region
* Vendor GbE(if it has one)
* Vendor ME region
* Vendor BIOS region

This fix tries with -M and -O first. In this combination,
me_cleaner shall extract me.bin (neutered) and save it.

If that fails, then the normal method with just -O is
tried, which by this logic would always be a lone ME
image if it succeeds.

I tested downloading ME images on existing boards with
this, and it didn't break them, and this fixes the bug.

This is done for HP 8200 SFF which Riku_V is adding to
lbmk. I'm on IRC with Riku_V as I write this commit
message! Super hot hotfix patch.