rockchip: pwm: convert to use live dt

use live dt api to get base addr

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

drivers/pwm/rk_pwm.c

@@ -76,7 +76,7 @@ static int rk_pwm_ofdata_to_platdata(struct udevice *dev)
 {
 	struct rk_pwm_priv *priv = dev_get_priv(dev);
 
-	priv->regs = (struct rk3288_pwm *)devfdt_get_addr(dev);
+	priv->regs = (struct rk3288_pwm *)dev_read_addr(dev);
 
 	return 0;
 }