dm: tegra: pwm: Convert to livetree

Update the tegra pwm driver to support a live device tree.

Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Tested-on: Beaver, Jetson-TK1
Tested-by: Stephen Warren <swarren@nvidia.com>
diff --git a/drivers/pwm/tegra_pwm.c b/drivers/pwm/tegra_pwm.c
index d93ac28..b8acc15 100644
--- a/drivers/pwm/tegra_pwm.c
+++ b/drivers/pwm/tegra_pwm.c
@@ -59,7 +59,7 @@
 {
 	struct tegra_pwm_priv *priv = dev_get_priv(dev);
 
-	priv->regs = (struct pwm_ctlr *)devfdt_get_addr(dev);
+	priv->regs = (struct pwm_ctlr *)dev_read_addr(dev);
 
 	return 0;
 }