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/sh_qspi.c b/drivers/spi/sh_qspi.c
index 861423b..7dd1fe7 100644
--- a/drivers/spi/sh_qspi.c
+++ b/drivers/spi/sh_qspi.c
@@ -334,7 +334,7 @@
 {
 	struct sh_qspi_slave *plat = dev_get_plat(dev);
 
-	plat->regs = (struct sh_qspi_regs *)dev_read_addr(dev);
+	plat->regs = dev_read_addr_ptr(dev);
 
 	return 0;
 }