Makefile: add 'filelist' target

Add a target to show what files are used in the build. This was already
being generated for other targets, but there was no target to just
generate and view the list.

Change-Id: I6998296bb135d8b7170cacae2be902ef9dac7b54
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/20049
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

0 files changed, 0 insertions, 0 deletions