Add missing headers for compilation on x86 targets

Change-Id: I5f4dc797b353a0f01fa00d38375ec303bf863254
diff --git a/toolbox/date.c b/toolbox/date.c
index 13b5210..35ef846 100644
--- a/toolbox/date.c
+++ b/toolbox/date.c
@@ -1,10 +1,12 @@
 #include <stdio.h>
 #include <stdlib.h>
+#include <unistd.h>
 #include <fcntl.h>
 #include <string.h>
 #include <errno.h>
 #include <time.h>
 #include <linux/android_alarm.h>
+#include <sys/ioctl.h>
 
 static void settime(char *s) {
     struct tm tm;