bb.org: Enable the EXTRA_GROUPS options in /etc/adduser.conf and add i2c to the EXTRA_GROUPS
bb.org: Enable the EXTRA_GROUPS options in /etc/adduser.conf and add i2c to the EXTRA_GROUPS

Reported-by: Mark Grosen <f1b5a91d4d6ad523f2610114591c007e75d15084@grosen.org>
Signed-off-by: Robert Nelson <d6c41255011d14bfa93d8562b946ca186cfa0c7b@gmail.com>

gthrive/image-builder,robert-budde/omap-image-builder,RobertCNelson/omap-image-builder,mhaberler/omap-image-builder,miloh/image-builder,eliasbakken/kamikaze,hankchan/bbb-image-builder,OpenROV-forks/omap-image-builder,BrianAdams/omap-image-builder,RobertCNelson/omap-image-builder,OpenROV-forks/omap-image-builder,beagleboard/image-builder,robert-budde/omap-image-builder,miloh/image-builder,beagleboard/image-builder,jadonk/image-builder,jadonk/image-builder,jlefley/omap-image-builder,eliasbakken/omap-image-builder