Add missing includes.

Change-Id: Iaa130c0a7eb2cbc0c8486546e5b622661b6d9e23

adf/libadf/adf.c

@@ -17,9 +17,11 @@
 #include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
+#include <malloc.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <string.h>
+#include <unistd.h>
 
 #include <linux/limits.h>
 

init/builtins.c

@@ -29,6 +29,7 @@
 #include <stdlib.h>
 #include <sys/mount.h>
 #include <sys/resource.h>
+#include <sys/time.h>
 #include <sys/wait.h>
 #include <linux/loop.h>
 #include <cutils/partition_utils.h>

init/watchdogd.c

@@ -18,6 +18,7 @@
 #include <fcntl.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 
 #include <linux/watchdog.h>