clocksource/drivers/timer-ti-dm: Clear settings on probe and free

Clear the timer control register on driver probe and omap_dm_timer_free().
Otherwise we assume the consumer driver takes care of properly
initializing timer interrupts on PWM driver module reload for example.

AFAIK this is not currently needed as a fix, I just happened to run into
this while cleaning up things.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20221028103813.40783-1-tony@atomide.com


Signed-off-by: Daniel Lezcano <daniel.lezcano@kernel.org>