Input: cyttsp4 - use EXPORT_GPL_RUNTIME_DEV_PM_OPS()

SET_SYSTEM_SLEEP_PM_OPS() and RUNTIME_PM_OPS() are deprecated as
they requires explicit protection against unused function warnings.
The new combination of pm_ptr() EXPORT_GPL_RUNTIME_DEV_PM_OPS()
allows the compiler to see the functions, thus suppressing the
warning, but still allowing the unused code to be
removed. Thus also drop the #ifdef guards.

Note that we are replacing an unconditional call to the suspend
and resume functions for sleep use cases with one via
pm_runtime_force_suspend() / pm_runtime_force_resume() that only
do anything to the device if we are not already in the appropriate
runtime suspended state.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

--

I 'think' this should be fine in that it can only reduce the number
of unnecessary suspends.  If anyone can test that would be great.

Link: https://lore.kernel.org/r/20230114171620.42891-11-jic23@kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

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