aubinator: include libgen.h for basename(3)

Include libgen.h for basename as required by posix.
The definition is not found on at least OpenBSD otherwise.

Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
Reviewed-by: Kristian Høgsberg <krh@bitplanet.net>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>

src/intel/tools/aubinator.c

@@ -30,6 +30,7 @@
 #include <string.h>
 #include <signal.h>
 #include <errno.h>
+#include <libgen.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <sys/wait.h>