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/spi/spi-mxic.c b/drivers/spi/spi-mxic.c
index 6aae9f7..f663b9d 100644
--- a/drivers/spi/spi-mxic.c
+++ b/drivers/spi/spi-mxic.c
@@ -508,7 +508,7 @@
 {
 	struct mxic_spi_priv *priv = dev_get_priv(bus);
 
-	priv->regs = (void *)dev_read_addr(bus);
+	priv->regs = dev_read_addr_ptr(bus);
 
 	priv->send_clk = devm_clk_get(bus, "send_clk");
 	if (IS_ERR(priv->send_clk))