cbfstool: provide a prototype for remove_file_from_cbfs

To complement commit e1bb49e (Add a "remove" command to cbfstool) and
fix a compiler warning provide a prototype for remove_file_from_cbfs.

Change-Id: Ied8eac956de5fed3f9d82ce1e911ee1fec52db15
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Reviewed-on: http://review.coreboot.org/1235
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)
1 file changed