Add pwm yml file. TIMER0/1/2/3 support pwm, LPTIMER0/1 not. LPTIMER0/1 provide 16bits out that not meet pwm requirement. Co-authored-by: Mert Vatansever <mert.vatansever@analog.com> Signed-off-by: Sadik Ozer <sadik.ozer@analog.com>