slimbus: Add Device Tree support for SLIMBUS

Slave devices can be added by listing them as child of a SLIMBUS
controller of_node in the Device Tree.
It is required to specify elemental address, and name of the slave
device.

Change-Id: Ie1b2f8fe58988f0237547a84f1bbb14ce4733eff
Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
diff --git a/drivers/of/Makefile b/drivers/of/Makefile
index 2087c5e..bc2b481 100644
--- a/drivers/of/Makefile
+++ b/drivers/of/Makefile
@@ -11,3 +11,4 @@
 obj-$(CONFIG_OF_MDIO)	+= of_mdio.o
 obj-$(CONFIG_OF_PCI)	+= of_pci.o
 obj-$(CONFIG_OF_SPMI)	+= of_spmi.o
+obj-$(CONFIG_OF_SLIMBUS)	+= of_slimbus.o