Add missing headers for compilation on x86 targets

Change-Id: I5f4dc797b353a0f01fa00d38375ec303bf863254
diff --git a/toolbox/schedtop.c b/toolbox/schedtop.c
index c0e0141..6859b50 100644
--- a/toolbox/schedtop.c
+++ b/toolbox/schedtop.c
@@ -2,7 +2,9 @@
 #include <stdlib.h>
 #include <ctype.h>
 #include <fcntl.h>
+#include <unistd.h>
 
+#include <stdint.h>
 #include <string.h>
 
 #include <sys/stat.h>
@@ -332,4 +334,3 @@
     closedir(d);
     return 0;
 }
-