The merging of a number of clocksource drivers into fttmr010 means we
require clock-names to be specified in the Aspeed timer node, else the
clocksource fails to probe and boot hangs.
Signed-off-by: NAndrew Jeffery <andrew@aj.id.au>
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>