csm: Fix boot priority translation

Explicitly handle the BBS_DO_NOT_BOOT_FROM and BBS_IGNORE_ENTRY values.

Also add one to the other priority values, as find_prio() does for
entries from bootorder. SeaBIOS uses zero for an item explicitly
selected in interactive_bootmenu().

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
1 file changed
tree: fa95efc167b150ac2e442e8e62d8b69814ebdff0
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  8. src/
  9. vgasrc/