Introduce a config option where the user can enable support for adding/removing
device tree nodes using a device tree binary overlay.

Signed-off-by: Vikram Garhwal <fnu.vik...@xilinx.com>
---
 xen/arch/arm/Kconfig | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/xen/arch/arm/Kconfig b/xen/arch/arm/Kconfig
index ecfa6822e4..0159fbe27a 100644
--- a/xen/arch/arm/Kconfig
+++ b/xen/arch/arm/Kconfig
@@ -46,6 +46,12 @@ config HAS_ITS
         bool "GICv3 ITS MSI controller support (UNSUPPORTED)" if UNSUPPORTED
         depends on GICV3 && !NEW_VGIC
 
+config OVERLAY_DTB
+    bool "DTB overlay support (UNSUPPORTED)" if UNSUPPORTED
+    ---help---
+
+    Dynamic addition/removal of Xen device tree nodes using a dtbo.
+
 config HVM
         def_bool y
 
-- 
2.17.1


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