pwm: imx-tpm: Enable pinctrl setting for sleep state

Apply the pinctrl setting of sleep state when system enters
suspend state.
Restore to the default pinctrl setting when system resumes.

Signed-off-by: Shenwei Wang <shenwei.wang@nxp.com>
Link: https://lore.kernel.org/r/20240702164514.11007-1-shenwei.wang@nxp.com


Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>