pwm: mtk-disp: implement atomic API .apply()
Switch the driver to support the .apply() method.
Upstream patchs cherry-picked:
888a623db5d0 pwm: mtk-disp: Implement atomic API .apply()
d7a4e582587d pwm: mtk-disp: Adjust the clocks to avoid them mismatch
9b7b5736ffd5 pwm: mtk-disp: Don't check the return code of pwmchip_remove()
Edited by Julien Masson