GitLab

This allows users to run make clean without specifying the target
architecture.

Corresponding to flashrom svn r1022.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Idwer Vollering <vidwer@gmail.com>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>