fix on nav_check_wp_time
Merge pull request #755 from kadir4172/fix_on_check_wp_time

fix on nav_check_wp_time
[stm32] actuators_pwm: remove unused defines
[stm32] actuators_pwm: replace set_servo_gpio with gpio_setup_pin_af

- AFIO remap in board file
- gpio_setup_pin_af with uint32_t for af
- remove PWM_SERVO_x_RCC