pkg/mount/mtd: * Add tests for Dev struct of Flasher interface
pkg/mount/mtd:
* Add tests for Dev struct of Flasher interface

Signed-off-by: Christopher Meis <8c5e739988ca243199545b4ccb26c9d0c7f533ad@9elements.com>

u-root/u-root,u-root/u-root,u-root/u-root