res_stir_shaken: Include OpenSSL headers where used actually.

This avoids the inclusion of the OpenSSL headers in the public header,
which avoids one external library dependency in res_pjsip_stir_shaken.

Change-Id: I6a07e2d81d2b5442e24e99b8cc733a99f881dcf4

include/asterisk/res_stir_shaken.h

@@ -18,9 +18,6 @@
 #ifndef _RES_STIR_SHAKEN_H
 #define _RES_STIR_SHAKEN_H
 
-#include <openssl/evp.h>
-#include <openssl/pem.h>
-
 #define STIR_SHAKEN_ENCRYPTION_ALGORITHM "ES256"
 #define STIR_SHAKEN_PPT "shaken"
 #define STIR_SHAKEN_TYPE "passport"

res/res_pjsip_stir_shaken.c

@@ -17,7 +17,6 @@
  */
 
 /*** MODULEINFO
-	<depend>crypto</depend>
 	<depend>pjproject</depend>
 	<depend>res_pjsip</depend>
 	<depend>res_pjsip_session</depend>

res/res_stir_shaken.c

@@ -25,6 +25,8 @@
 
 #include "asterisk.h"
 
+#include <openssl/evp.h>
+
 #include "asterisk/module.h"
 #include "asterisk/sorcery.h"
 #include "asterisk/time.h"

res/res_stir_shaken/stir_shaken.c

@@ -23,6 +23,9 @@
 
 #include "asterisk.h"
 
+#include <openssl/evp.h>
+#include <openssl/pem.h>
+
 #include "asterisk/cli.h"
 #include "asterisk/sorcery.h"