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/shared/image-loader.c b/shared/image-loader.c
index f477dfd..30b57cd 100644
--- a/shared/image-loader.c
+++ b/shared/image-loader.c
@@ -28,6 +28,7 @@
 
 #include <errno.h>
 #include <stdlib.h>
+#include <stdint.h>
 #include <stdio.h>
 #include <string.h>
 #include <png.h>