homework,repart: turn on cryptsetup logging before we have a context

Otherwise we'll miss the log message from allocation of the context. We
already made this change in most of our tools that interface with
libcryptsetup, but we forgot two.

As suggested:

https://github.com/systemd/systemd/pull/21135#discussion_r738287504

src/home/homework.c

@@ -1785,6 +1785,8 @@ static int run(int argc, char *argv[]) {
 
         log_setup();
 
+        cryptsetup_enable_logging(NULL);
+
         umask(0022);
 
         if (argc < 2 || argc > 3)

src/partition/repart.c

@@ -4827,6 +4827,10 @@ static int run(int argc, char *argv[]) {
         if (r < 0)
                 return r;
 
+#if HAVE_LIBCRYPTSETUP
+        cryptsetup_enable_logging(NULL);
+#endif
+
         if (arg_image) {
                 assert(!arg_root);