The mcux pwm drivers use period cycles as a divisor to calculate the pwm
frequency in hertz. This operation can underflow easily with large
values of period cycles relative to the pwm clock source, causing the
driver to return an error code and the pwm_api test to fail.
Updates the test to use the smaller set of period and pulse cycles on
k64-based boards, fixing the test for frdm_k64f and hexiwear_k64 boards.
The test is not changed for i.mx rt boards because the pwm clock source
on these boards is much faster than on k64 boards, and thus the same pwm
frequency operation does not underflow.
Signed-off-by: Maureen Helm <maureen.helm@nxp.com>
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