Update the GPIO driver to support a live device tree.

Signed-off-by: Simon Glass <s...@chromium.org>
---

 drivers/gpio/tegra_gpio.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/gpio/tegra_gpio.c b/drivers/gpio/tegra_gpio.c
index 687cd74fee..4965583158 100644
--- a/drivers/gpio/tegra_gpio.c
+++ b/drivers/gpio/tegra_gpio.c
@@ -337,11 +337,13 @@ static int gpio_tegra_bind(struct udevice *parent)
         * This driver does not make use of interrupts, other than to figure
         * out the number of GPIO banks
         */
-       if (!fdt_getprop(gd->fdt_blob, dev_of_offset(parent), "interrupts",
-                        &len))
-               return -EINVAL;
+       len = dev_read_size(parent, "interrupts");
+       if (len < 0)
+               return len;
        bank_count = len / 3 / sizeof(u32);
-       ctlr = (struct gpio_ctlr *)devfdt_get_addr(parent);
+       ctlr = (struct gpio_ctlr *)dev_read_addr(parent);
+       if ((ulong)ctlr == FDT_ADDR_T_NONE)
+               return -EINVAL;
        }
 #endif
        for (bank = 0; bank < bank_count; bank++) {
-- 
2.13.0.303.g4ebf302169-goog

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