Add the Reach version the psplash screen

When psplash starts the software version is displayed
to psplash. The version comes from /etc/reach-version.

Signed-off-by: Reach Technology <reach@reach-devel-02.(none)>
Add a upgrade-flash.sh script

This scritp will allow customers to upgrade/re-install the
base image to flash. All customer images will now contain the
kernel and root ubifs so the flash can be re-flashed.

Signed-off-by: Reach Technology <reach@reach-devel-02.(none)>