Revert "Merge tag 'dm-pull-20jul20' of git://git.denx.de/u-boot-dm"

This reverts commit 5d3a21df6694ebd66d5c34c9d62a26edc7456fc7, reversing
changes made to 56d37f1c564107e27d873181d838571b7d7860e7.

Unfortunately this is causing CI failures:
https://travis-ci.org/github/trini/u-boot/jobs/711313649

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/drivers/net/ag7xxx.c b/drivers/net/ag7xxx.c
index ccba394..3b5d11f 100644
--- a/drivers/net/ag7xxx.c
+++ b/drivers/net/ag7xxx.c
@@ -1256,7 +1256,7 @@
 	const char *phy_mode;
 	int ret;
 
-	pdata->iobase = dev_read_addr(dev);
+	pdata->iobase = devfdt_get_addr(dev);
 	pdata->phy_interface = -1;
 
 	/* Decoding of convoluted PHY wiring on Atheros MIPS. */