clocksource: Timer-sun5i: Switch to sched_clock_register()

clocksource: Timer-sun5i: Switch to sched_clock_register()

The 32-bit sched_clock() interface supports 64 bits since
3.13-rc1. Upgrade to the 64-bit function to allow us to remove
the 32-bit registration interface.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1389922686-6249-1-git-send-email-sboyd@codeaurora.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>