zebra: Fix some warnings found during compile.

This commit fixes some warnings found in Martin's Testbed
that compiles sun solaris and freebsd images.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
diff --git a/zebra/if_ioctl_solaris.c b/zebra/if_ioctl_solaris.c
index 50b4aca..b399812 100644
--- a/zebra/if_ioctl_solaris.c
+++ b/zebra/if_ioctl_solaris.c
@@ -31,6 +31,7 @@
 #include "log.h"
 #include "privs.h"
 #include "vrf.h"
+#include "vty.h"
 
 #include "zebra/interface.h"
 #include "zebra/ioctl_solaris.h"