dlfcn-util: migrate to public SD_ELF_NOTE_DLOPEN() API

Switch all internal callers from the private ELF_NOTE_DLOPEN() macro to
the new public SD_ELF_NOTE_DLOPEN() API from sd-dlopen.h, and remove
the now-redundant macro definitions from dlfcn-util.h.

Signed-off-by: Christian Brauner <brauner@kernel.org>

src/shared/cryptsetup-util.c

@@ -2,6 +2,7 @@
 
 #include <stdlib.h>
 
+#include "sd-dlopen.h"
 #include "sd-json.h"
 
 #include "alloc-util.h"
@@ -270,9 +271,10 @@ int dlopen_cryptsetup(void) {
          * still available though, and given we want to support 2.2.0 for a while longer, we'll use the old
          * symbol if the new one is not available. */
 
-        ELF_NOTE_DLOPEN("cryptsetup",
+        SD_ELF_NOTE_DLOPEN(
+                        "cryptsetup",
                         "Support for disk encryption, integrity, and authentication",
-                        ELF_NOTE_DLOPEN_PRIORITY_SUGGESTED,
+                        SD_ELF_NOTE_DLOPEN_PRIORITY_SUGGESTED,
                         "libcryptsetup.so.12");
 
         r = dlopen_many_sym_or_warn(