dm: Rename dev_addr..() functions

These support the flat device tree. We want to use the dev_read_..()
prefix for functions that support both flat tree and live tree. So rename
the existing functions to avoid confusion.

In the end we will have:

   1. dev_read_addr...()    - works on devices, supports flat/live tree
   2. devfdt_get_addr...()  - current functions, flat tree only
   3. of_get_address() etc. - new functions, live tree only

All drivers will be written to use 1. That function will in turn call
either 2 or 3 depending on whether the flat or live tree is in use.

Note this involves changing some dead code - the imx_lpi2c.c file.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/net/sun8i_emac.c b/drivers/net/sun8i_emac.c
index a3dbe28..d895d09 100644
--- a/drivers/net/sun8i_emac.c
+++ b/drivers/net/sun8i_emac.c
@@ -776,8 +776,8 @@
 	int ret = 0;
 #endif
 
-	pdata->iobase = dev_get_addr_name(dev, "emac");
-	priv->sysctl_reg = dev_get_addr_name(dev, "syscon");
+	pdata->iobase = devfdt_get_addr_name(dev, "emac");
+	priv->sysctl_reg = devfdt_get_addr_name(dev, "syscon");
 
 	pdata->phy_interface = -1;
 	priv->phyaddr = -1;