include stdint.h for int32_t/uint32_t

Signed-off-by: Jussi Kukkonen <jussi.kukkonen@intel.com>
Reviewed-by: Yong Bakos <ybakos@humanoriented.com>
diff --git a/ivi-shell/ivi-shell.h b/ivi-shell/ivi-shell.h
index 369e5f8..e35f75f 100644
--- a/ivi-shell/ivi-shell.h
+++ b/ivi-shell/ivi-shell.h
@@ -27,6 +27,7 @@
 #define WESTON_IVI_SHELL_H
 
 #include <stdbool.h>
+#include <stdint.h>
 
 #include "compositor.h"