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/spi/omap3_spi.c b/drivers/spi/omap3_spi.c
index 3caea15..ebbdcaf 100644
--- a/drivers/spi/omap3_spi.c
+++ b/drivers/spi/omap3_spi.c
@@ -633,7 +633,7 @@
 	struct omap2_mcspi_platform_config* data =
 		(struct omap2_mcspi_platform_config*)dev_get_driver_data(dev);
 
-	priv->regs = (struct mcspi *)(dev_get_addr(dev) + data->regs_offset);
+	priv->regs = (struct mcspi *)(devfdt_get_addr(dev) + data->regs_offset);
 	priv->pin_dir = fdtdec_get_uint(blob, node, "ti,pindir-d0-out-d1-in",
 					    MCSPI_PINDIR_D0_IN_D1_OUT);
 	priv->wordlen = SPI_DEFAULT_WORDLEN;