Allow user to set currently active firmware revision
Reviewed-by: NKonstantin Shelekhin <k.shelekhin@yadro.com>
Reviewed-by: NDmitriy Bogdanov <d.bogdanov@yadro.com>
Signed-off-by: NAleksandr Miloserdov <a.miloserdov@yadro.com>
Signed-off-by: NChristoph Hellwig <hch@lst.de>