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/adc/exynos-adc.c b/drivers/adc/exynos-adc.c
index 534e68d..324d72f 100644
--- a/drivers/adc/exynos-adc.c
+++ b/drivers/adc/exynos-adc.c
@@ -107,7 +107,7 @@
 	struct adc_uclass_platdata *uc_pdata = dev_get_uclass_platdata(dev);
 	struct exynos_adc_priv *priv = dev_get_priv(dev);
 
-	priv->regs = (struct exynos_adc_v2 *)dev_get_addr(dev);
+	priv->regs = (struct exynos_adc_v2 *)devfdt_get_addr(dev);
 	if (priv->regs == (struct exynos_adc_v2 *)FDT_ADDR_T_NONE) {
 		error("Dev: %s - can't get address!", dev->name);
 		return -ENODATA;