external: add header files that require iotivity

To handle variable arguments in iotivity, you need the stdarg.h file.
This patch allows you to include this file.

Change-Id: I3c6afee312542764c94ced931e9563ed70090875
Signed-off-by: Junhwan Park <junhwan.park@samsung.com>

diff --git a/external/Kconfig b/external/Kconfig
index 51a5ecf..b1e3912 100644 (file)
--- a/external/Kconfig
+++ b/external/Kconfig
@@ -73,6 +73,7 @@ config ENABLE_IOTIVITY
        default n
        select LIBC_NETDB
        select TIME_EXTENDED
+       select ARCH_STDARG_H
        ---help---
                select to enable the iotivity stack in tinyara