devicetree: Add empty of_platform_populate() for !CONFIG_OF_ADDRESS (sparc)

Sparc has its own helpers for translating address ranges when the device
tree is parsed at boot time, and it isn't able to use of_platform_populate().
However, there are some device drivers that want to use that function on
other DT enabled platforms (ie. TWL4030).  This patch adds an empty
of_platform_populate() implementation that returns an error when
CONFIG_OF_ADDRESS is not selected.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Cc: Benoit Cousson <b-cousson@ti.com>
Cc: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c
index 66f9bff..4970d43 100644
--- a/drivers/mfd/twl-core.c
+++ b/drivers/mfd/twl-core.c
@@ -1305,11 +1305,10 @@
 		twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1);
 	}
 
-#ifdef CONFIG_OF_DEVICE
+	status = -ENODEV;
 	if (node)
 		status = of_platform_populate(node, NULL, NULL, &client->dev);
-	else
-#endif
+	if (status)
 		status = add_children(pdata, id->driver_data);
 
 fail: