Merge patch series "fw_loader: Split from fs_loader into separate library file"

This series from Marek Vasut <marek.vasut+renesas@mailbox.org> splits
the fw_loader "script" code out from the fs_loader code as the former
does not require the latter.

Link: https://lore.kernel.org/r/20250922114926.51984-1-marek.vasut+renesas@mailbox.org