blockconsole: Allow to pass a device file path to bcon_tail

... instead of always looking through all devices.

Minor tweak: Moved the "CANDIDATES=" line below Takashi's new code.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Joern Engel <joern@logfs.org>
1 file changed