comms: include header for writev

The compiler complains about implicit declarations otherwise.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20180622141205.16306-3-alex.bennee@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/comms.c b/comms.c
index 2900c33..6946fd9 100644
--- a/comms.c
+++ b/comms.c
@@ -17,6 +17,7 @@
 #include <errno.h>
 #include <sys/socket.h>
 #include <sys/types.h>
+#include <sys/uio.h>
 #include <netinet/in.h>
 #include <netdb.h>