drivers: use dev_read_addr_ptr when cast to pointer

The fdt_addr_t and phys_addr_t size have been decoupled. A 32bit CPU
can expect 64-bit data from the device tree parser, so use
dev_read_addr_ptr instead of the dev_read_addr function in the
various files in the drivers directory that cast to a pointer.
As we are there also streamline the error response to -EINVAL on return.

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/video/stm32/stm32_dsi.c b/drivers/video/stm32/stm32_dsi.c
index e6347bb..a7420fb 100644
--- a/drivers/video/stm32/stm32_dsi.c
+++ b/drivers/video/stm32/stm32_dsi.c
@@ -427,8 +427,8 @@
 
 	device->dev = dev;
 
-	priv->base = (void *)dev_read_addr(dev);
-	if ((fdt_addr_t)priv->base == FDT_ADDR_T_NONE) {
+	priv->base = dev_read_addr_ptr(dev);
+	if (!priv->base) {
 		dev_err(dev, "dsi dt register address error\n");
 		return -EINVAL;
 	}