proc: unify PROC_DEVICETREE config

Microblaze and PPC both use PROC_DEVICETREE, and OLPC will as well.. put
the Kconfig option into fs/ rather than in arch/*/Kconfig.

Signed-off-by: Andres Salomon <dilinger@queued.net>
[grant.likely@secretlab.ca: changed depends to PROC_FS && !SPARC]
[grant.likely@secretlab.ca: moved to drivers/of/Kconfig]
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig
index ae2d4ad67bd0..6acbff389ab6 100644
--- a/drivers/of/Kconfig
+++ b/drivers/of/Kconfig
@@ -7,6 +7,14 @@ config OF
 menu "Flattened Device Tree and Open Firmware support"
         depends on OF
 
+config PROC_DEVICETREE
+        bool "Support for device tree in /proc"
+        depends on PROC_FS && !SPARC
+        help
+          This option adds a device-tree directory under /proc which contains
+          an image of the device tree that the kernel copies from Open
+          Firmware or other boot firmware. If unsure, say Y here.
+
 config OF_FLATTREE
         bool
         select DTC