of: Introduce Device Tree resolve support.

Introduce support for dynamic device tree resolution.
Using it, it is possible to prepare a device tree that's
been loaded on runtime to be modified and inserted at the kernel
live tree.

Export of of_resolve and bug fix of double free by
	Guenter Roeck <groeck@juniper.net>

Signed-off-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
[grant.likely: Don't need to select CONFIG_OF_DYNAMIC and CONFIG_OF_DEVICE]
[grant.likely: Don't need to depend on OF or !SPARC]
[grant.likely: Factor out duplicate code blocks into single function]
Signed-off-by: Grant Likely <grant.likely@linaro.org>
diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig
index 5160c4e..6b81a36 100644
--- a/drivers/of/Kconfig
+++ b/drivers/of/Kconfig
@@ -79,4 +79,7 @@
 	help
 	  Helpers to allow for reservation of memory regions
 
+config OF_RESOLVE
+	bool
+
 endmenu # OF