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/hmi-controller.c b/ivi-shell/hmi-controller.c
index 0c28e81..f3a8830 100644
--- a/ivi-shell/hmi-controller.c
+++ b/ivi-shell/hmi-controller.c
@@ -52,6 +52,7 @@
 #include <sys/wait.h>
 #include <unistd.h>
 #include <stdlib.h>
+#include <stdint.h>
 #include <stdio.h>
 #include <string.h>
 #include <linux/input.h>