staging: Solo6x10: remove unneeded __solo parameter from SOLO_*_EXT_ADDR macros.

Signed-off-by: Krzysztof Hałasa <khalasa@piap.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Ismael Luceno <ismael.luceno@corp.bluecherry.net>