[S] Change in coreboot[master]: soc/amd/common/block: Add missing cbfs_unmap().

[Konrad Adamczyk (Code Review)]

Attention is currently required from: Jason Glenesk, Raul Rangel, Matt DeVillier, Grzegorz Bernacki, Tim Van Patten, Fred Reitberger, Karthik Ramasubramanian, Felix Held.

Konrad Adamczyk has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/74716 )

Change subject: soc/amd/common/block: Add missing cbfs_unmap().
......................................................................

Patch Set 1:

(2 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/74716/comment/df33ac80_16cd4db5 
PS1, Line 15:
> missing `Signed-off-by` tag.

I see that same comment was raised by Jakub a while ago.

File src/soc/amd/common/block/graphics/graphics.c:

https://review.coreboot.org/c/coreboot/+/74716/comment/f242e12d_cf1d9dc9 
PS1, Line 173: 	cbfs_unmap(rom);
> What do you think about introducing `pci_rom_free` at `src/device/pci_rom. […]

Duplicate of https://review.coreboot.org/c/coreboot/+/74716/comments/623a5431_7912517a, closing this one to not cause confusion.