linux-raspberrypi.inc: no longer set CONFIG_LOCALVERSION to empty string
linux-raspberrypi.inc: no longer set CONFIG_LOCALVERSION to empty string

Fixes: #533

Signed-off-by: Michael Baisch <f1892e515b0a378987dd59afe3d7ad9467eda75d@tau-tec.com>

agherzan/meta-raspberrypi,agherzan/meta-raspberrypi,schnitzeltony/meta-raspberrypi,agherzan/meta-raspberrypi,agherzan/meta-raspberrypi,schnitzeltony/meta-raspberrypi,agherzan/meta-raspberrypi,agherzan/meta-raspberrypi,schnitzeltony/meta-raspberrypi