patch to make epsonds backend compile under FreeBSD

Note: I have only taken the patches already in the FreeBSD port and submitted here; this is not my work. From https://svnweb.freebsd.org/ports/head/graphics/sane-backends/files/patch-backend_epsonds.c?revision=517720&view=markup&pathrev=526253

--- backend/epsonds.c.orig	2019-10-09 14:38:54 UTC
+++ backend/epsonds.c
@@ -48,6 +48,8 @@
 # include <sys/time.h>
 #endif
 #include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
 
 #include "sane/saneopts.h"
 #include "sane/sanei_config.h"

hope this helps.