dhcpcd: use correct header file.

Change-Id: Ie8e1ad41cc4fc0d8ebcaa7deb5ee0a57d69eb477
diff --git a/dhcpcd.c b/dhcpcd.c
index 8a008a0..bac33f3 100644
--- a/dhcpcd.c
+++ b/dhcpcd.c
@@ -73,7 +73,7 @@
 #include "signals.h"
 
 #ifdef ANDROID
-#include <linux/capability.h>
+#include <sys/capability.h>
 #include <linux/prctl.h>
 #include <cutils/properties.h>
 #include <private/android_filesystem_config.h>