The restart button is currently assigned to KEY_POWER power script but
an easily accessible button immediately powering off the device is
undesirable. Switch to using new KEY_POWER2 reboot script with 5 second
seen delay.
Fixes: FS#1965
Signed-off-by: Alan Swanson <reiver@improbability.net>
Signed-off-by: Petr Štetiar <ynezz@true.cz> [long line wrap]