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/mmc/am654_sdhci.c b/drivers/mmc/am654_sdhci.c
index 42a6134..fd667ae 100644
--- a/drivers/mmc/am654_sdhci.c
+++ b/drivers/mmc/am654_sdhci.c
@@ -584,7 +584,7 @@
 	int ret;
 
 	host->name = dev->name;
-	host->ioaddr = (void *)dev_read_addr(dev);
+	host->ioaddr = dev_read_addr_ptr(dev);
 	plat->non_removable = dev_read_bool(dev, "non-removable");
 
 	if (plat->flags & DLL_PRESENT) {