clockevents/drivers/time-armada-370-xp: Migrate to new 'set-state' interface
clockevents/drivers/time-armada-370-xp: Migrate to new 'set-state' interface

Migrate time-armada-370-xp driver to the new 'set-state' interface
provided by clockevents core, the earlier 'set-mode' interface is marked
obsolete now.

This also enables us to implement callbacks for new states of clockevent
devices, for example: ONESHOT_STOPPED.

Cc: Jason Cooper <68c46a606457643eab92053c1c05574abb26f861@lakedaemon.net>
Cc: Andrew Lunn <02e0a999c50b1f88df7a8f5a04e1b76b35ea6a88@lunn.ch>
Cc: Gregory Clement <cd8db494d8ed74d7c3f56ec5c769dff3d51dd397@free-electrons.com>
Cc: Sebastian Hesselbarth <1d402fe89ace836b52164ed4c0f247cb6f80efc1@gmail.com>
Signed-off-by: Viresh Kumar <5ff32272b3d9f86512eddc8e0af523fc6f7924e5@linaro.org>
Signed-off-by: Daniel Lezcano <e9fa45941f2ebe89c1b9d6c5f339ab42eadb8567@linaro.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs