rcn: jessie: wvdial broken

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
setup_sdcard.sh: add conf_kernel to select bone kernel

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
setup_sdcard.sh: add lpae kernel option

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>