cmd: Allow building ufetch without CONFIG_BLK

The ufetch command is still quite useful on systems without block
device support; remove the CONFIG_BLK dependency and make sure the code
compiles/works with and without CONFIG_BLK.

Reviewed-by: Caleb Connolly <caleb.connolly@linaro.org>
Signed-off-by: J. Neuschäfer <j.ne@posteo.net>
Link: https://lore.kernel.org/r/20241211-ufetch-v2-2-2b5432ffaeb1@posteo.net
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
2 files changed