manibuilder/anita: Factor things out into Makefile.anita

The anita-based NetBSD targets need noisy, per-target handling.
Factor it out into another Makefile.

Change-Id: I0a3ca751b42f1ca8c05d93eb9740bb0ee5cc6d09
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/52483
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2 files changed