barebox.inc: rework
barebox.inc: rework

Changes:
 - remove copyright per recipe, this is more common in most of the
   layers
 - update description
 - reorder variables, be more upstream compliant
 - use white spaces and no tabs to be consistent with the style guide

Signed-off-by: Stefan Müller-Klieser <a3e08e35e4a42be768e7d0e76ae1ba321c2a66dd@phytec.de>

PHYTEC-Messtechnik-GmbH/meta-phytec,PHYTEC-Messtechnik-GmbH/meta-phytec,PHYTEC-Messtechnik-GmbH/meta-phytec,PHYTEC-Messtechnik-GmbH/meta-phytec,PHYTEC-Messtechnik-GmbH/meta-phytec