added support for custom barebox image name (#37)
added support for custom barebox image name (#37)

classes: bundle: added support for custom bootloader image name

added selection of the image name with the slotflag 'file'. If the slotflag 'file' is not set, the default image name 'barebox.img' is used.

Signed-off-by: Eugen Wiens <374f673d204a349d6a8c9400edb77137333c383d@jumo.net>
rauc/meta-rauc,rauc/meta-rauc,rauc/meta-rauc,rauc/meta-rauc