tool: add support for "ptp update" command (configure ptp without switch reset)
tool: add support for "ptp update" command (configure ptp without switch reset)

Signed-off-by: Vladimir Oltean <6ef50fec496bca30294ed8eff4f157ee91f2dc55@nxp.com>

openil/sja1105-tool,openil/sja1105-tool