cli_classic.c: add -x option for do_extract()

This change introduces a new option to extract all layout regions to
files with the name of each region (or with the provided filename via
-i region:file). It is implemented by mutating the flash layout to
include all regions and backfilling the entry->file with entry->name
(replacing spaces with underscores)

Signed-off-by: Daniel Campello <campello@chromium.org>
Change-Id: I8c69223fa92cf5b50abe070f1ab9f19d3b42f6ff
Reviewed-on: https://review.coreboot.org/c/flashrom/+/52450
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
5 files changed